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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
gr-qc/0208004 | Heiko Herrmann | Heiko J. Herrmann, G. Rueckner, W. Muschik, H.-H. v. Borzeszkowski | Spin Axioms in Relativistic Continuum Physics | 15 pages, dirac-electron example has been rewritten | Found.Phys. 34 (2004) 1005-1021 | 10.1023/B:FOOP.0000034226.19527.0e | null | gr-qc | null | The 24 components of the relativistic spin tensor consist of 3+3 basic spin
fields and 9+9 constitutive fields. Empirically only 3 basic spin fields and 9
constitutive fields are known. This empirem can be expressed by two spin
axioms, one of them identifying 3 spin fields, and the other one 9 constitutive
fields to ... | [
{
"created": "Fri, 2 Aug 2002 12:21:24 GMT",
"version": "v1"
},
{
"created": "Fri, 9 Aug 2002 10:25:29 GMT",
"version": "v2"
}
] | 2013-07-23 | [
[
"Herrmann",
"Heiko J.",
""
],
[
"Rueckner",
"G.",
""
],
[
"Muschik",
"W.",
""
],
[
"Borzeszkowski",
"H. -H. v.",
""
]
] | The 24 components of the relativistic spin tensor consist of 3+3 basic spin fields and 9+9 constitutive fields. Empirically only 3 basic spin fields and 9 constitutive fields are known. This empirem can be expressed by two spin axioms, one of them identifying 3 spin fields, and the other one 9 constitutive fields to ea... |
1003.0352 | Antonino Marciano | Antonino Marciano | Towards inhomogeneous loop quantum cosmology: triangulating Bianchi IX
with perturbations | 4 pages. To appear in the proceedings of 12th Marcel Grossmann
Meeting on General Relativity (MG 12), Paris, France, 12-18 Jul 2009 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This brief article sums up results obtained in arXiv:0911.2653, which
develops a constrained SU(2) lattice gauge theory in the "dipole"
approximation. This is a further step toward the issue of a (inhomogeneous)
loop quantum cosmology and its merging into loop quantum gravity.
| [
{
"created": "Mon, 1 Mar 2010 14:06:57 GMT",
"version": "v1"
}
] | 2010-03-02 | [
[
"Marciano",
"Antonino",
""
]
] | This brief article sums up results obtained in arXiv:0911.2653, which develops a constrained SU(2) lattice gauge theory in the "dipole" approximation. This is a further step toward the issue of a (inhomogeneous) loop quantum cosmology and its merging into loop quantum gravity. |
0908.0283 | Dong-han Yeom | Jakob Hansen, Dong-il Hwang, Dong-han Yeom | Dynamics of false vacuum bubbles: beyond the thin shell approximation | 40 pages, 41 figures | JHEP 0911:016,2009 | 10.1088/1126-6708/2009/11/016 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We numerically study the dynamics of false vacuum bubbles which are inside an
almost flat background; we assumed spherical symmetry and the size of the
bubble is smaller than the size of the background horizon. According to the
thin shell approximation and the null energy condition, if the bubble is
outside of a Schw... | [
{
"created": "Mon, 3 Aug 2009 15:50:34 GMT",
"version": "v1"
},
{
"created": "Sun, 8 Nov 2009 07:39:32 GMT",
"version": "v2"
}
] | 2010-04-30 | [
[
"Hansen",
"Jakob",
""
],
[
"Hwang",
"Dong-il",
""
],
[
"Yeom",
"Dong-han",
""
]
] | We numerically study the dynamics of false vacuum bubbles which are inside an almost flat background; we assumed spherical symmetry and the size of the bubble is smaller than the size of the background horizon. According to the thin shell approximation and the null energy condition, if the bubble is outside of a Schwar... |
gr-qc/0102008 | David Langlois | David Langlois (IAP, Paris) | Superfluid neutron stars | 2 pages, "mprocl.sty" with LaTeX 2.09; contribution to the 9th Marcel
Grossmann Meeting (MG9), Rome, July 2000 | null | 10.1142/9789812777386_0338 | null | gr-qc | null | Neutron stars are believed to contain (neutron and proton) superfluids. I
will give a summary of a macroscopic description of the interior of neutron
stars, in a formulation which is general relativistic. I will also present
recent results on the oscillations of neutron stars, with superfluidity
explicitly taken into... | [
{
"created": "Fri, 2 Feb 2001 13:23:27 GMT",
"version": "v1"
}
] | 2017-08-23 | [
[
"Langlois",
"David",
"",
"IAP, Paris"
]
] | Neutron stars are believed to contain (neutron and proton) superfluids. I will give a summary of a macroscopic description of the interior of neutron stars, in a formulation which is general relativistic. I will also present recent results on the oscillations of neutron stars, with superfluidity explicitly taken into a... |
gr-qc/0210099 | P. A. Hogan | P.A. Hogan, E.M. O'Shea | Shear-Free Gravitational Waves in an Anisotropic Universe | 32 pages, accepted for publication in Physical Review D | Phys.Rev. D66 (2002) 124016 | 10.1103/PhysRevD.66.124016 | null | gr-qc | null | We study gravitational waves propagating through an anisotropic Bianchi I
dust-filled universe (containing the Einstein-de-Sitter universe as a special
case). The waves are modeled as small perturbations of this background
cosmological model and we choose a family of null hypersurfaces in this
space-time to act as th... | [
{
"created": "Tue, 29 Oct 2002 11:18:20 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Hogan",
"P. A.",
""
],
[
"O'Shea",
"E. M.",
""
]
] | We study gravitational waves propagating through an anisotropic Bianchi I dust-filled universe (containing the Einstein-de-Sitter universe as a special case). The waves are modeled as small perturbations of this background cosmological model and we choose a family of null hypersurfaces in this space-time to act as the ... |
1810.04102 | Yan Peng | Yan Peng | On instabilities of scalar hairy regular compact reflecting stars | 8 pages | JHEP10(2018)185 | 10.1007/JHEP10(2018)185 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the system constructed by charged scalar fields linearly coupled to
asymptotically flat horizonless compact reflecting stars. We obtain bounds on
the charge of the scalar field, below which the scalar hairy star is expected
to suffer from nonlinear instabilities. It means that scalar hairy regular
configurat... | [
{
"created": "Tue, 9 Oct 2018 16:20:28 GMT",
"version": "v1"
},
{
"created": "Tue, 23 Oct 2018 08:36:31 GMT",
"version": "v2"
}
] | 2018-11-05 | [
[
"Peng",
"Yan",
""
]
] | We study the system constructed by charged scalar fields linearly coupled to asymptotically flat horizonless compact reflecting stars. We obtain bounds on the charge of the scalar field, below which the scalar hairy star is expected to suffer from nonlinear instabilities. It means that scalar hairy regular configuratio... |
1709.03547 | Luca Guido Molinari | Carlo Alberto Mantica and Luca Guido Molinari | Shear and vorticity of perfect-fluid spacetimes and the shear-free
conjecture | 7 pages. In this version we added a brief presentation of the
"shear-free conjecture" with references | null | null | null | gr-qc math-ph math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain expressions for the shear and the vorticity tensors of
perfect-fluid spacetimes, in terms of the divergence of the Weyl tensor. For
such spacetimes, we prove that if the gradient of the energy density is
parallel to the velocity, then either the expansion rate is zero, or the
vorticity vanishes. This statem... | [
{
"created": "Mon, 11 Sep 2017 19:04:22 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Nov 2017 21:32:24 GMT",
"version": "v2"
}
] | 2017-11-21 | [
[
"Mantica",
"Carlo Alberto",
""
],
[
"Molinari",
"Luca Guido",
""
]
] | We obtain expressions for the shear and the vorticity tensors of perfect-fluid spacetimes, in terms of the divergence of the Weyl tensor. For such spacetimes, we prove that if the gradient of the energy density is parallel to the velocity, then either the expansion rate is zero, or the vorticity vanishes. This statemen... |
2307.07263 | Marie-No\"elle C\'el\'erier | M.-N. C\'el\'erier | Interior spacetimes sourced by stationary differentially rotating
irrotational cylindrical fluids. II. Axial pressure | overlap with 2312.09263 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a recent series of papers new exact analytical solutions of Einstein
equations representing interior spacetimes sourced by stationary rigidly
rotating cylinders of fluids have been displayed. We have first considered a
fluid with an axially directed pressure C\'el\'erier, Phys. Rev. D 104, 064040
(2021), J. Math. ... | [
{
"created": "Fri, 14 Jul 2023 10:37:28 GMT",
"version": "v1"
},
{
"created": "Fri, 5 Jul 2024 15:32:19 GMT",
"version": "v2"
}
] | 2024-07-08 | [
[
"Célérier",
"M. -N.",
""
]
] | In a recent series of papers new exact analytical solutions of Einstein equations representing interior spacetimes sourced by stationary rigidly rotating cylinders of fluids have been displayed. We have first considered a fluid with an axially directed pressure C\'el\'erier, Phys. Rev. D 104, 064040 (2021), J. Math. Ph... |
1410.0631 | Massimiliano Rinaldi | Massimiliano Rinaldi, Guido Cognola, Luciano Vanzo, Sergio Zerbini | Inflation in scale-invariant theories of gravity | Minor typos corrected. Version accepted for publication in PRD | Phys. Rev. D 91, 123527 (2015) | 10.1103/PhysRevD.91.123527 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Thanks to the Planck Collaboration, we know the value of the scalar spectral
index of primordial fluctuations with unprecedented precision. In addition, the
joint analysis of the data from Planck, BICEP2, and KEK has further constrained
the value of the tensor-to-scalar ratio $r$ so that chaotic inflationary
scenario... | [
{
"created": "Thu, 2 Oct 2014 18:14:18 GMT",
"version": "v1"
},
{
"created": "Wed, 8 Oct 2014 14:09:59 GMT",
"version": "v2"
},
{
"created": "Wed, 11 Feb 2015 11:52:28 GMT",
"version": "v3"
},
{
"created": "Tue, 21 Apr 2015 11:26:24 GMT",
"version": "v4"
},
{
"cre... | 2015-06-24 | [
[
"Rinaldi",
"Massimiliano",
""
],
[
"Cognola",
"Guido",
""
],
[
"Vanzo",
"Luciano",
""
],
[
"Zerbini",
"Sergio",
""
]
] | Thanks to the Planck Collaboration, we know the value of the scalar spectral index of primordial fluctuations with unprecedented precision. In addition, the joint analysis of the data from Planck, BICEP2, and KEK has further constrained the value of the tensor-to-scalar ratio $r$ so that chaotic inflationary scenarios ... |
gr-qc/0210024 | Gilad Gour | Gilad Gour | Algebraic approach to quantum black holes: logarithmic corrections to
black hole entropy | 15 pages, Revtex, to appear in Phys. Rev. D | Phys.Rev. D66 (2002) 104022 | 10.1103/PhysRevD.66.104022 | null | gr-qc hep-th quant-ph | null | The algebraic approach to black hole quantization requires the horizon area
eigenvalues to be equally spaced. As shown previously, for a neutral
non-rotating black hole, such eigenvalues must be $2^{n}$-fold degenerate if
one constructs the black hole stationary states by means of a pair of creation
operators subject... | [
{
"created": "Tue, 8 Oct 2002 17:36:49 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Gour",
"Gilad",
""
]
] | The algebraic approach to black hole quantization requires the horizon area eigenvalues to be equally spaced. As shown previously, for a neutral non-rotating black hole, such eigenvalues must be $2^{n}$-fold degenerate if one constructs the black hole stationary states by means of a pair of creation operators subject t... |
0902.4513 | Ivan L. Zhogin | I.L. Zhogin | One more fitting (D=5) of Supernovae redshifts | 5 pages, 3 figures; few paragraphs and four references are added | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Supernova Ia redshifts are fitted with a simple $5D$ model: the galaxies are
assumed to be enclosed in a giant $S^3$-spherical shell of significant
thickness, which expands (ultra)relativisticaly in Minkowski (1+4)$D$-space.
This model, as compared with the kinematic (1+3)$D$ Milne cosmological model
(which was reinv... | [
{
"created": "Thu, 26 Feb 2009 06:27:45 GMT",
"version": "v1"
},
{
"created": "Fri, 6 Mar 2009 11:40:10 GMT",
"version": "v2"
},
{
"created": "Tue, 6 Sep 2022 12:36:15 GMT",
"version": "v3"
}
] | 2022-09-07 | [
[
"Zhogin",
"I. L.",
""
]
] | Supernova Ia redshifts are fitted with a simple $5D$ model: the galaxies are assumed to be enclosed in a giant $S^3$-spherical shell of significant thickness, which expands (ultra)relativisticaly in Minkowski (1+4)$D$-space. This model, as compared with the kinematic (1+3)$D$ Milne cosmological model (which was reinven... |
gr-qc/0409115 | L. C. Garcia de Andrade | L.C. Garcia de Anddrade | Irrotational vortex geometry of torsion loops | Latex file | null | null | null | gr-qc | null | The irrotational vortex geometry carachter of torsion loops is displayed by
showing that torsion loops and nonradial flow acoustic metrics are conformally
equivalent in $(1+1)$ dimensions while radial flow acoustic spacetime are
conformally related in $(2+1)$ dimensional spacetime. The analysis of
2-dimensional space... | [
{
"created": "Wed, 29 Sep 2004 23:19:45 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"de Anddrade",
"L. C. Garcia",
""
]
] | The irrotational vortex geometry carachter of torsion loops is displayed by showing that torsion loops and nonradial flow acoustic metrics are conformally equivalent in $(1+1)$ dimensions while radial flow acoustic spacetime are conformally related in $(2+1)$ dimensional spacetime. The analysis of 2-dimensional space a... |
gr-qc/0601039 | Maria Babiuc | Maria C. Babiuc, Bela Szilagyi, Jeffrey Winicour | Harmonic Initial-Boundary Evolution in General Relativity | 31 pages, 14 figures, submitted to Physical Review D | Phys.Rev.D73:064017,2006 | 10.1103/PhysRevD.73.064017 | null | gr-qc | null | Computational techniques which establish the stability of an
evolution-boundary algorithm for a model wave equation with shift are
incorporated into a well-posed version of the initial-boundary value problem
for gravitational theory in harmonic coordinates. The resulting algorithm is
implemented as a 3-dimensional nu... | [
{
"created": "Tue, 10 Jan 2006 14:56:57 GMT",
"version": "v1"
},
{
"created": "Tue, 14 Mar 2006 21:36:55 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Babiuc",
"Maria C.",
""
],
[
"Szilagyi",
"Bela",
""
],
[
"Winicour",
"Jeffrey",
""
]
] | Computational techniques which establish the stability of an evolution-boundary algorithm for a model wave equation with shift are incorporated into a well-posed version of the initial-boundary value problem for gravitational theory in harmonic coordinates. The resulting algorithm is implemented as a 3-dimensional nume... |
1909.11353 | Mikhail Iofa | Mikhail Z. Iofa | Black holes with supertranslation field, "large transformations" and
Israel theorem | 8 pages. Completely new discussion.Published version | Phys. Rev. D 102, 104008 (2020) | 10.1103/PhysRevD.102.104008 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An axial-symmetric vacuum solution of the Einstein equations containing a
supertranslation field diffeomorphic to the Schwarzschild solution is discussed
in the context of Israel theorem. The metric satisfies all conditions of the
Israel theorem, except for the condition on the form of the metric at spatial
infinity.... | [
{
"created": "Wed, 25 Sep 2019 09:04:20 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Nov 2020 11:07:26 GMT",
"version": "v2"
}
] | 2020-12-01 | [
[
"Iofa",
"Mikhail Z.",
""
]
] | An axial-symmetric vacuum solution of the Einstein equations containing a supertranslation field diffeomorphic to the Schwarzschild solution is discussed in the context of Israel theorem. The metric satisfies all conditions of the Israel theorem, except for the condition on the form of the metric at spatial infinity. N... |
0802.0942 | Francesco Cianfrani dr | Giovanni Montani, Francesco Cianfrani | General Relativity as Classical Limit of Evolutionary Quantum Gravity | 23 pages, to appear on Class. Quant. Grav | Class.Quant.Grav.25:065007,2008 | 10.1088/0264-9381/25/6/065007 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the dynamics of the gravitational field when the covariance is
restricted to a synchronous gauge. In the spirit of the Noether theorem, we
determine the conservation law associated to the Lagrangian invariance and we
outline that a non-vanishing behavior of the Hamiltonian comes out. We then
interpret such... | [
{
"created": "Thu, 7 Feb 2008 10:40:40 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Montani",
"Giovanni",
""
],
[
"Cianfrani",
"Francesco",
""
]
] | We analyze the dynamics of the gravitational field when the covariance is restricted to a synchronous gauge. In the spirit of the Noether theorem, we determine the conservation law associated to the Lagrangian invariance and we outline that a non-vanishing behavior of the Hamiltonian comes out. We then interpret such r... |
2305.18192 | Saeed Rastgoo | Angel Garcia-Chung, Matthew F. Carney, James B. Mertens, Aliasghar
Parvizi, Saeed Rastgoo, Yaser Tavakoli | Constraining the quantum gravity polymer scale using LIGO data | Invited contribution to "Focus issue on Quantum Gravity Phenomenology
in the Multi-Messenger Era: Challenges and Perspectives" in Classical and
Quantum Gravity, 18 pages, 6 figures, Part of the COST Action CA18108:
Quantum gravity phenomenology in the multi-messenger approach. V2: added
comments on polymer quan... | Class. Quantum Grav. 41 (2023) 1, 015011 | 10.1088/1361-6382/ad0db1 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the first empirical constraints on the polymer scale describing
polymer quantized GWs propagating on a classical background. These constraints
are determined from the polymer-induced deviation from the classically
predicted propagation speed of GWs. We leverage posterior information on the
propagation spee... | [
{
"created": "Mon, 29 May 2023 16:43:03 GMT",
"version": "v1"
},
{
"created": "Sun, 3 Dec 2023 01:42:24 GMT",
"version": "v2"
}
] | 2023-12-05 | [
[
"Garcia-Chung",
"Angel",
""
],
[
"Carney",
"Matthew F.",
""
],
[
"Mertens",
"James B.",
""
],
[
"Parvizi",
"Aliasghar",
""
],
[
"Rastgoo",
"Saeed",
""
],
[
"Tavakoli",
"Yaser",
""
]
] | We present the first empirical constraints on the polymer scale describing polymer quantized GWs propagating on a classical background. These constraints are determined from the polymer-induced deviation from the classically predicted propagation speed of GWs. We leverage posterior information on the propagation speed ... |
1801.08838 | Paolo Valtancoli | Paolo Valtancoli | Ads spacetime in Lorentz covariant gauges | 9 pages, no figures | null | 10.1016/j.aop.2018.05.004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show how to generate the AdS spacetime metric in general Lorentz covariant
gauges. In particular we propose an iterative method for solving the Lorentz
gauge.
| [
{
"created": "Fri, 26 Jan 2018 15:09:49 GMT",
"version": "v1"
}
] | 2018-07-04 | [
[
"Valtancoli",
"Paolo",
""
]
] | We show how to generate the AdS spacetime metric in general Lorentz covariant gauges. In particular we propose an iterative method for solving the Lorentz gauge. |
1603.06769 | S. Sedigheh Hashemi | Nematollah Riazi and S. Sedigheh Hashemi | From Taub-NUT to Kaluza-Klein magnetic monopole | 7 pages, Contribution to the proceedings of the 9th Alexander
Friedmann International Seminar on Gravitation and Cosmology and 3rd
Satellite Symposium on the Casimir Effect, 22-26 June, 2015, St. Petersburg,
Russia, based on a talk. in International Journal of Modern Physics:
Conference Series, (2016) | null | 10.1142/S2010194516601216 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a Kaluza-Klien vacuum solution which closely resembles the
Taub-NUT magnetic monopole and we investigate its physical properties as viewed
from four space-time dimensions. We show that the Taub-NUT Kaluza-Klein vacuum
solution in five dimensions is a static magnetic monopole. We find that the
four dimensio... | [
{
"created": "Tue, 22 Mar 2016 12:57:12 GMT",
"version": "v1"
}
] | 2016-04-20 | [
[
"Riazi",
"Nematollah",
""
],
[
"Hashemi",
"S. Sedigheh",
""
]
] | We present a Kaluza-Klien vacuum solution which closely resembles the Taub-NUT magnetic monopole and we investigate its physical properties as viewed from four space-time dimensions. We show that the Taub-NUT Kaluza-Klein vacuum solution in five dimensions is a static magnetic monopole. We find that the four dimensiona... |
1704.07720 | Hasan El Moumni | M. Chabab, H. El Moumni, S. Iraoui, K. Masmar, S. Zhizeh | More Insight into Microscopic Properties of RN-AdS Black Hole Surrounded
by Quintessence via an Alternative Extended Phase Space | 14 pages, 5 figures | International Journal of Geometric Methods in Modern Physics Vol.
15 (2018) 1850171 | 10.1142/S0219887818501712 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we study the phase transition of the charged-AdS black hole
surrounded by quintessence via an alternative extended phase space defined by
the charge square $Q^2$ and her conjugate $\Psi$, a quantity proportional to
the inverse of horizon radius, while the cosmological constant is kept fixed.
The equation... | [
{
"created": "Mon, 17 Apr 2017 14:01:08 GMT",
"version": "v1"
}
] | 2018-09-11 | [
[
"Chabab",
"M.",
""
],
[
"Moumni",
"H. El",
""
],
[
"Iraoui",
"S.",
""
],
[
"Masmar",
"K.",
""
],
[
"Zhizeh",
"S.",
""
]
] | In this work we study the phase transition of the charged-AdS black hole surrounded by quintessence via an alternative extended phase space defined by the charge square $Q^2$ and her conjugate $\Psi$, a quantity proportional to the inverse of horizon radius, while the cosmological constant is kept fixed. The equation o... |
2002.02044 | Michael Ross P | M.P. Ross, C.A. Hagedorn, E.A. Shaw, A.L. Lockwood, B.M. Iritani, J.G.
Lee, K. Venkateswara, and J. H. Gundlach | Limits on the Stochastic Gravitational Wave Background and Prospects for
Single Source Detection with GRACE Follow-On | null | Phys. Rev. D 101, 102004 (2020) | 10.1103/PhysRevD.101.102004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | With a reinterpretation of recent results, the GRACE Follow-On mission can be
applied to gravitational wave astronomy. Existing GRACE Follow-On data
constrain the stochastic gravitational wave background to
$\Omega_{GW}<3.3\times10^{7}$ at 100 mHz. With a dedicated analysis, GRACE
Follow-On may be able to detect the ... | [
{
"created": "Thu, 6 Feb 2020 00:33:11 GMT",
"version": "v1"
},
{
"created": "Thu, 30 Apr 2020 23:47:41 GMT",
"version": "v2"
},
{
"created": "Wed, 13 May 2020 20:57:08 GMT",
"version": "v3"
}
] | 2020-05-27 | [
[
"Ross",
"M. P.",
""
],
[
"Hagedorn",
"C. A.",
""
],
[
"Shaw",
"E. A.",
""
],
[
"Lockwood",
"A. L.",
""
],
[
"Iritani",
"B. M.",
""
],
[
"Lee",
"J. G.",
""
],
[
"Venkateswara",
"K.",
""
],
[
"Gundlac... | With a reinterpretation of recent results, the GRACE Follow-On mission can be applied to gravitational wave astronomy. Existing GRACE Follow-On data constrain the stochastic gravitational wave background to $\Omega_{GW}<3.3\times10^{7}$ at 100 mHz. With a dedicated analysis, GRACE Follow-On may be able to detect the in... |
gr-qc/0504080 | Rommel Guerrero | Rommel Guerrero, R. Omar Rodriguez, R. Ortiz, Rafael Torrealba | De Sitter and double irregular domain walls | 13 pages, 4 figures, added references, some equations corrected | Gen.Rel.Grav. 38 (2006) 845-855 | 10.1007/s10714-006-0297-y | null | gr-qc | null | A new method to obtain thick domain wall solutions to the coupled Einstein
scalar field system is presented. The procedure allows the construction of
irregular walls from well known ones, such that the spacetime associated to
them are physically different. As consequence of the approach, we obtain two
irregular geome... | [
{
"created": "Mon, 18 Apr 2005 20:15:54 GMT",
"version": "v1"
},
{
"created": "Thu, 21 Apr 2005 21:07:42 GMT",
"version": "v2"
},
{
"created": "Mon, 17 Oct 2005 15:13:41 GMT",
"version": "v3"
},
{
"created": "Thu, 15 Mar 2007 22:13:00 GMT",
"version": "v4"
}
] | 2009-11-11 | [
[
"Guerrero",
"Rommel",
""
],
[
"Rodriguez",
"R. Omar",
""
],
[
"Ortiz",
"R.",
""
],
[
"Torrealba",
"Rafael",
""
]
] | A new method to obtain thick domain wall solutions to the coupled Einstein scalar field system is presented. The procedure allows the construction of irregular walls from well known ones, such that the spacetime associated to them are physically different. As consequence of the approach, we obtain two irregular geometr... |
1101.2515 | Farook Rahaman | F.Rahaman, Peter K.F.Kuhfittig, K.Chakraborty, M.Kalam and D.Hossain | Modeling galactic halos with predominantly quintessential matter | 12 pages, 1 figure | Int.J.Theor.Phys.50:2655-2665,2011 | 10.1007/s10773-011-0761-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper discusses a new model for galactic dark matter by combining an
anisotropic pressure field corresponding to normal matter and a quintessence
dark energy field having a characteristic parameter $\omega_q$ such that
$-1<\omega_q< -\frac{1}{3}$. Stable stellar orbits together with an attractive
gravity exist o... | [
{
"created": "Thu, 13 Jan 2011 09:41:26 GMT",
"version": "v1"
}
] | 2011-07-15 | [
[
"Rahaman",
"F.",
""
],
[
"Kuhfittig",
"Peter K. F.",
""
],
[
"Chakraborty",
"K.",
""
],
[
"Kalam",
"M.",
""
],
[
"Hossain",
"D.",
""
]
] | This paper discusses a new model for galactic dark matter by combining an anisotropic pressure field corresponding to normal matter and a quintessence dark energy field having a characteristic parameter $\omega_q$ such that $-1<\omega_q< -\frac{1}{3}$. Stable stellar orbits together with an attractive gravity exist onl... |
2210.03966 | Satoshi Matsumoto | S. Matsumoto | No-Go Theorems for Hairy Black Holes in Scalar- or
Vector-Tensor-Gauss-Bonnet Theory | 11 pages | null | 10.1088/1361-6382/ace94e | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | In this paper, we show a no-go theorem for static spherically symmetric black
holes with vector hair in Einstein-$\Lambda$-Vector-Tensor-Gauss-Bonnet theory
where a complex vector field non-minimally couples with Gauss-Bonnet invariant.
For this purpose, we expand metric functions and radial functions of a vector
fie... | [
{
"created": "Sat, 8 Oct 2022 08:24:02 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Mar 2023 07:35:16 GMT",
"version": "v2"
}
] | 2023-08-16 | [
[
"Matsumoto",
"S.",
""
]
] | In this paper, we show a no-go theorem for static spherically symmetric black holes with vector hair in Einstein-$\Lambda$-Vector-Tensor-Gauss-Bonnet theory where a complex vector field non-minimally couples with Gauss-Bonnet invariant. For this purpose, we expand metric functions and radial functions of a vector field... |
gr-qc/9712008 | Patricio Anibal Letelier | P.S. Letelier and W.M. Vieira | Chaos and Rotating Black Holes with Halos | 9 pages, 4 Postscript figures. Phys. Rev. D, in press | Phys.Rev.D56:8095-8098,1997 | 10.1103/PhysRevD.56.8095 | null | gr-qc | null | The occurrence of chaos for test particles moving around a slowly rotating
black hole with a dipolar halo is studied using Poincar\'e sections. We find a
novel effect, particles with angular momentum opposite to the black hole
rotation have larger chaotic regions in phase space than particles initially
moving in the ... | [
{
"created": "Mon, 1 Dec 1997 18:10:45 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Letelier",
"P. S.",
""
],
[
"Vieira",
"W. M.",
""
]
] | The occurrence of chaos for test particles moving around a slowly rotating black hole with a dipolar halo is studied using Poincar\'e sections. We find a novel effect, particles with angular momentum opposite to the black hole rotation have larger chaotic regions in phase space than particles initially moving in the sa... |
gr-qc/0608029 | Irina Radinschi | I. Radinschi and B. Ciobanu (Department of Physics, Gh. Asachi
Technical University, Iasi, Romania) | Weinberg Energy-Momentum Complex for a Stringy Black Hole Solution | 9 pages, LaTex | AIP Conf.Proc.895:329-332,2007 | 10.1063/1.2720445 | null | gr-qc | null | In our paper we compute the energy distribution of a magnetic stringy black
hole solution in the Weinberg prescription. The metric under consideration
describes the dual solution in the string frame that is known as the magnetic
stringy black hole solution. The metric is obtained by multiplying the electric
metric in... | [
{
"created": "Fri, 4 Aug 2006 19:34:14 GMT",
"version": "v1"
},
{
"created": "Sun, 6 Aug 2006 09:54:05 GMT",
"version": "v2"
}
] | 2011-07-19 | [
[
"Radinschi",
"I.",
"",
"Department of Physics, Gh. Asachi\n Technical University, Iasi, Romania"
],
[
"Ciobanu",
"B.",
"",
"Department of Physics, Gh. Asachi\n Technical University, Iasi, Romania"
]
] | In our paper we compute the energy distribution of a magnetic stringy black hole solution in the Weinberg prescription. The metric under consideration describes the dual solution in the string frame that is known as the magnetic stringy black hole solution. The metric is obtained by multiplying the electric metric in t... |
gr-qc/0312090 | Cristian R. Ghezzi | Cristian R. Ghezzi, Patricio S. Letelier | Numerical Simulation of General Relativistic Stellar Collapse | 3 pages, 4 figs., submitted to the Proceedings of the "X Marcel
Grossmann Meeting on General Relativity" in Rio de Janeiro, Brazil, July
20-26 (2003) | null | null | null | gr-qc | null | We present preliminar results and tests of a new general relativistic code to
simulate the hydrodynamic collapse of a 21 solar masses star. We have assumed
spherical symmetry and used the formalism of Misner and Sharp to construct a
finite-difference scheme to solve the Einstein's equations, energy-momentum
conservat... | [
{
"created": "Fri, 19 Dec 2003 19:46:07 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Ghezzi",
"Cristian R.",
""
],
[
"Letelier",
"Patricio S.",
""
]
] | We present preliminar results and tests of a new general relativistic code to simulate the hydrodynamic collapse of a 21 solar masses star. We have assumed spherical symmetry and used the formalism of Misner and Sharp to construct a finite-difference scheme to solve the Einstein's equations, energy-momentum conservatio... |
gr-qc/0509053 | Hongwei Yu | Hongwei Yu and Shizhuan Lu | Spontaneous excitation of an accelerated atom in a spacetime with a
reflecting plane boundary | A few typographical errors corrected | Phys.Rev.D72:064022,2005; Erratum-ibid.D73:109901,2006 | 10.1103/PhysRevD.72.064022 10.1103/PhysRevD.73.109901 | null | gr-qc hep-th physics.atom-ph quant-ph | null | We study a two-level atom in interaction with a real massless scalar quantum
field in a spacetime with a reflecting boundary. The presence of the boundary
modifies the quantum fluctuations of the scalar field, which in turn modifies
the radiative properties of atoms. We calculate the rate of change of the mean
atomic... | [
{
"created": "Thu, 15 Sep 2005 13:39:41 GMT",
"version": "v1"
},
{
"created": "Thu, 27 Apr 2006 01:42:43 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Yu",
"Hongwei",
""
],
[
"Lu",
"Shizhuan",
""
]
] | We study a two-level atom in interaction with a real massless scalar quantum field in a spacetime with a reflecting boundary. The presence of the boundary modifies the quantum fluctuations of the scalar field, which in turn modifies the radiative properties of atoms. We calculate the rate of change of the mean atomic e... |
1505.07462 | Emanuele Berti | Michael Horbatsch, Hector O. Silva, Davide Gerosa, Paolo Pani,
Emanuele Berti, Leonardo Gualtieri, Ulrich Sperhake | Tensor-multi-scalar theories: relativistic stars and 3+1 decomposition | 32 pages, 8 figures, 1 table, invited contribution to the Classical
and Quantum Gravity Focus Issue "Black holes and fundamental fields". v3:
version in press in CQG, with various improvements in response to the
referees' comments. In particular, the 3+1 decomposition now allows for
matter | Class. Quantum Grav. 32, 20, 204001 (2015) | 10.1088/0264-9381/32/20/204001 | null | gr-qc astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational theories with multiple scalar fields coupled to the metric and
each other --- a natural extension of the well studied single-scalar-tensor
theories --- are interesting phenomenological frameworks to describe deviations
from general relativity in the strong-field regime. In these theories, the
$N$-tuple ... | [
{
"created": "Wed, 27 May 2015 20:00:59 GMT",
"version": "v1"
},
{
"created": "Mon, 8 Jun 2015 17:53:51 GMT",
"version": "v2"
},
{
"created": "Sun, 6 Sep 2015 00:32:11 GMT",
"version": "v3"
}
] | 2016-05-02 | [
[
"Horbatsch",
"Michael",
""
],
[
"Silva",
"Hector O.",
""
],
[
"Gerosa",
"Davide",
""
],
[
"Pani",
"Paolo",
""
],
[
"Berti",
"Emanuele",
""
],
[
"Gualtieri",
"Leonardo",
""
],
[
"Sperhake",
"Ulrich",
""
]
... | Gravitational theories with multiple scalar fields coupled to the metric and each other --- a natural extension of the well studied single-scalar-tensor theories --- are interesting phenomenological frameworks to describe deviations from general relativity in the strong-field regime. In these theories, the $N$-tuple of... |
2208.01872 | Laur J\"arv | Sebastian Bahamonde, Laur J\"arv | Coincident gauge for static spherical field configurations in symmetric
teleparallel gravity | 24 pages, version submitted to EPJC | Eur. Phys. J. C 82, 963 (2022) | 10.1140/epjc/s10052-022-10922-9 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In symmetric teleparallel gravities, where the independent connection is
characterized by nonmetricity while curvature and torsion are zero, it is
possible to find a coordinate system whereby the connection vanishes globally
and covariant derivatives reduce to partial derivatives -- the coincident
gauge. In this pape... | [
{
"created": "Wed, 3 Aug 2022 06:52:50 GMT",
"version": "v1"
},
{
"created": "Mon, 31 Oct 2022 09:48:36 GMT",
"version": "v2"
}
] | 2022-11-01 | [
[
"Bahamonde",
"Sebastian",
""
],
[
"Järv",
"Laur",
""
]
] | In symmetric teleparallel gravities, where the independent connection is characterized by nonmetricity while curvature and torsion are zero, it is possible to find a coordinate system whereby the connection vanishes globally and covariant derivatives reduce to partial derivatives -- the coincident gauge. In this paper ... |
2311.15272 | Hossein Khodabakhshi | H. Khodabakhshi, F. Shojai and H. L\"u | Cosmological Time Crystals from Gauss-Bonnet Gravity in Four Dimensions | 24 pages, 8 figures, 2 tables | JCAP06(2024)002 | 10.1088/1475-7516/2024/06/002 | null | gr-qc | http://creativecommons.org/licenses/by-sa/4.0/ | We investigate various cosmological aspects of a 4-Dimensional Gauss-Bonnet
Lagrangian, which is integrated into the Einstein Lagrangian with an arbitrary
sign, using the Friedman-Lema\^itre-Robertson-Walker (FLRW) metric. We consider
a general potential term, $V(a)$, that depends on the scale factor $a$, and we
anal... | [
{
"created": "Sun, 26 Nov 2023 11:52:58 GMT",
"version": "v1"
},
{
"created": "Thu, 9 May 2024 17:49:26 GMT",
"version": "v2"
}
] | 2024-06-11 | [
[
"Khodabakhshi",
"H.",
""
],
[
"Shojai",
"F.",
""
],
[
"Lü",
"H.",
""
]
] | We investigate various cosmological aspects of a 4-Dimensional Gauss-Bonnet Lagrangian, which is integrated into the Einstein Lagrangian with an arbitrary sign, using the Friedman-Lema\^itre-Robertson-Walker (FLRW) metric. We consider a general potential term, $V(a)$, that depends on the scale factor $a$, and we analyz... |
gr-qc/0602114 | John Klauder | John R. Klauder and J. Scott Little | Highly Irregular Quantum Constraints | 19 pages, latex | Class.Quant.Grav. 23 (2006) 3641 | 10.1088/0264-9381/23/10/025 | null | gr-qc hep-th math-ph math.MP | null | Motivated by a recent paper of Louko and Molgado, we consider a simple system
with a single classical constraint R(q)=0. If q_l denotes a generic solution to
R(q)=0, our examples include cases where R'(q_l)\ne 0 (regular constraint) and
R'(q_l)=0 (irregular constraint) of varying order as well as the case where
R(q)=... | [
{
"created": "Mon, 27 Feb 2006 18:27:44 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Klauder",
"John R.",
""
],
[
"Little",
"J. Scott",
""
]
] | Motivated by a recent paper of Louko and Molgado, we consider a simple system with a single classical constraint R(q)=0. If q_l denotes a generic solution to R(q)=0, our examples include cases where R'(q_l)\ne 0 (regular constraint) and R'(q_l)=0 (irregular constraint) of varying order as well as the case where R(q)=0 ... |
0712.1520 | Miguel Sabido | W. Guzm\'an, M. Sabido and J. Socorro | Noncommutivity and Scalar Field Cosmology | 4 Pages, 2 figures, Revtex 4 | Phys.Rev.D76:087302,2007 | 10.1103/PhysRevD.76.087302 | null | gr-qc | null | In this work we extend and apply a previous proposal to study noncommutative
cosmology to the FRW cosmological background coupled to a scalar field, this is
done in classical and quantum scenarios. In both cases noncommutativity is
introduced in the gravitational field as well as in the scalar field through a
deforma... | [
{
"created": "Mon, 10 Dec 2007 15:54:43 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Guzmán",
"W.",
""
],
[
"Sabido",
"M.",
""
],
[
"Socorro",
"J.",
""
]
] | In this work we extend and apply a previous proposal to study noncommutative cosmology to the FRW cosmological background coupled to a scalar field, this is done in classical and quantum scenarios. In both cases noncommutativity is introduced in the gravitational field as well as in the scalar field through a deformati... |
1009.3745 | Azad Akhter Siddiqui Professor | Asghar Qadir and Azad A. Siddiqui | Asymptotic Behaviour of the Proper Length and Volume of the
Schwarzschild Singularity | 13 pages, 1 figure | Int.J.Mod.Phys.D18:397-404,2009 | 10.1142/S0218271809014510 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Though popular presentations give the Schwarzschild singularity as a point it
is known that it is spacelike and not timelike. Thus it has a "length" and is
not a "point". In fact, its length must necessarily be infinite. It has been
proved that the proper length of the Qadir-Wheeler suture model goes to
infinity [1],... | [
{
"created": "Mon, 20 Sep 2010 09:35:30 GMT",
"version": "v1"
}
] | 2010-11-26 | [
[
"Qadir",
"Asghar",
""
],
[
"Siddiqui",
"Azad A.",
""
]
] | Though popular presentations give the Schwarzschild singularity as a point it is known that it is spacelike and not timelike. Thus it has a "length" and is not a "point". In fact, its length must necessarily be infinite. It has been proved that the proper length of the Qadir-Wheeler suture model goes to infinity [1], w... |
2309.00994 | Matteo Luca Ruggiero | Matteo Luca Ruggiero | Synchronization and Fundamental Time: a Connection between Relativity
and Quantum Mechanics | 11 pages; accepted for publication in Foundations of Physics | Foundations of Physics (2023) 53:83 | 10.1007/s10701-023-00724-8 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An interesting connection between special relativity and quantum mechanics
was put forward by Louis de Broglie, about 60 years ago, who focused on the
link between synchronization in a rotating frame and the quantization of the
angular momentum. Here we generalise his approach to curved spacetime, using
the gravitoel... | [
{
"created": "Sat, 2 Sep 2023 17:30:20 GMT",
"version": "v1"
}
] | 2023-09-18 | [
[
"Ruggiero",
"Matteo Luca",
""
]
] | An interesting connection between special relativity and quantum mechanics was put forward by Louis de Broglie, about 60 years ago, who focused on the link between synchronization in a rotating frame and the quantization of the angular momentum. Here we generalise his approach to curved spacetime, using the gravitoelec... |
gr-qc/0505153 | Viqar Husain | Viqar Husain and Oliver Winkler | How red is a quantum black hole? | 3 pages, essay for the Gravity Research Foundation | Int.J.Mod.Phys. D14 (2005) 2233-2238 | 10.1142/S0218271805007851 | null | gr-qc hep-th | null | Radiating black holes pose a number of puzzles for semiclassical and quantum
gravity. These include the transplanckian problem -- the nearly infinite
energies of Hawking particles created near the horizon, and the final state of
evaporation. A definitive resolution of these questions likely requires robust
inputs fro... | [
{
"created": "Mon, 30 May 2005 20:06:30 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Husain",
"Viqar",
""
],
[
"Winkler",
"Oliver",
""
]
] | Radiating black holes pose a number of puzzles for semiclassical and quantum gravity. These include the transplanckian problem -- the nearly infinite energies of Hawking particles created near the horizon, and the final state of evaporation. A definitive resolution of these questions likely requires robust inputs from ... |
1305.4631 | Anil Yadav dr | Ahmad T. Ali and Anil Kumar Yadav | Symmetry Group Analysis for perfect fluid Inhomogeneous Cosmological
Models in General Relativity | 13 pages | Int. J. Theor. Phys. 53: 2505 - 2519 (2014) | 10.1007/s10773-014-2049-1 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we have searched the existence of the similarity solution for
plane symmetric inhomogeneous cosmological models in general relativity. The
matter source consists of perfect fluid with proportionality relation between
expansion scalar and shear scalar. The isovector fields of Einstein's field
equation f... | [
{
"created": "Mon, 20 May 2013 15:00:02 GMT",
"version": "v1"
},
{
"created": "Thu, 1 Aug 2013 16:32:09 GMT",
"version": "v2"
}
] | 2014-07-14 | [
[
"Ali",
"Ahmad T.",
""
],
[
"Yadav",
"Anil Kumar",
""
]
] | In this paper, we have searched the existence of the similarity solution for plane symmetric inhomogeneous cosmological models in general relativity. The matter source consists of perfect fluid with proportionality relation between expansion scalar and shear scalar. The isovector fields of Einstein's field equation for... |
2311.02740 | Thanasis Karakasis | Dionysios P. Theodosopoulos, Thanasis Karakasis, George Koutsoumbas,
Eleftherios Papantonopoulos | Motion of particles around a magnetically charged Euler-Heisenberg black
hole with scalar hair and the Event Horizon Telescope | 38 pages, 23 figures, references added | null | 10.1140/epjc/s10052-024-12956-7 | null | gr-qc astro-ph.HE hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | We study the motion of uncharged particles and photons in the background of a
magnetically charged Euler-Heisenberg (EH) black hole (BH) with scalar hair.
The spacetime can be asymptotically (A)dS or flat. After investigating particle
motions around the BH and the behavior of the effective potential of the
particle r... | [
{
"created": "Sun, 5 Nov 2023 19:09:27 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Nov 2023 13:18:49 GMT",
"version": "v2"
}
] | 2024-06-12 | [
[
"Theodosopoulos",
"Dionysios P.",
""
],
[
"Karakasis",
"Thanasis",
""
],
[
"Koutsoumbas",
"George",
""
],
[
"Papantonopoulos",
"Eleftherios",
""
]
] | We study the motion of uncharged particles and photons in the background of a magnetically charged Euler-Heisenberg (EH) black hole (BH) with scalar hair. The spacetime can be asymptotically (A)dS or flat. After investigating particle motions around the BH and the behavior of the effective potential of the particle rad... |
1405.5077 | Abraham Harte | Abraham I. Harte | Motion in classical field theories and the foundations of the self-force
problem | 68 pages, 1 figure | null | 10.1007/978-3-319-18335-0_12 | null | gr-qc math-ph math.MP physics.class-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article serves as a pedagogical introduction to the problem of motion in
classical field theories. The primary focus is on self-interaction: How does an
object's own field affect its motion? General laws governing the self-force and
self-torque are derived using simple, non-perturbative arguments. The relevant
c... | [
{
"created": "Tue, 20 May 2014 13:28:29 GMT",
"version": "v1"
},
{
"created": "Thu, 6 Aug 2015 16:50:54 GMT",
"version": "v2"
}
] | 2021-04-07 | [
[
"Harte",
"Abraham I.",
""
]
] | This article serves as a pedagogical introduction to the problem of motion in classical field theories. The primary focus is on self-interaction: How does an object's own field affect its motion? General laws governing the self-force and self-torque are derived using simple, non-perturbative arguments. The relevant con... |
gr-qc/9910003 | Ion Cotaescu | Ion I. Cot\u{a}escu (The West University of Timi\c{s}oara, Romania) | Geometric models of (d+1)-dimensional relativistic rotating oscillators | 7 pages, Latex | J.Math.Phys. 41 (2000) 7290-7293 | 10.1063/1.1314894 | null | gr-qc | null | Geometric models of quantum relativistic rotating oscillators in arbitrary
dimensions are defined on backgrounds with deformed anti-de Sitter metrics. It
is shown that these models are analytically solvable, deriving the formulas of
the energy levels and corresponding normalized energy eigenfunctions. An
important pr... | [
{
"created": "Fri, 1 Oct 1999 13:07:59 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Cotăescu",
"Ion I.",
"",
"The West University of Timişoara, Romania"
]
] | Geometric models of quantum relativistic rotating oscillators in arbitrary dimensions are defined on backgrounds with deformed anti-de Sitter metrics. It is shown that these models are analytically solvable, deriving the formulas of the energy levels and corresponding normalized energy eigenfunctions. An important prop... |
0810.0505 | Niall \'O Murchadha | Niall O Murchadha | With commuting Killing vectors, the lapse and shift of one Killing
vector are constants along the other | The key result in this paper was previously discovered by Beig and
Chrusciel using a different approach. I add the appropriate reference and a
short discussion of their derivation | null | null | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Given an d-dimensional manifold with two commuting Killing vectors, together
with an d - 1 dimensional submanifold in which one of the Killing vectors lies,
then the lapse and shift of the second Killing vector, relative to this slice,
remain constant along the orbits of the `surface' Killing vector.
Alternatively, t... | [
{
"created": "Thu, 2 Oct 2008 18:07:42 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Oct 2008 16:20:54 GMT",
"version": "v2"
}
] | 2008-10-09 | [
[
"Murchadha",
"Niall O",
""
]
] | Given an d-dimensional manifold with two commuting Killing vectors, together with an d - 1 dimensional submanifold in which one of the Killing vectors lies, then the lapse and shift of the second Killing vector, relative to this slice, remain constant along the orbits of the `surface' Killing vector. Alternatively, the... |
0907.4303 | Wen Zhao | W. Zhao, D. Baskaran, P. Coles | Detecting relics of a thermal gravitational wave background in the early
Universe | 9 pages, 4 figures, published version | Phys.Lett.B680:411-416,2009 | 10.1016/j.physletb.2009.09.018 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A thermal gravitational wave background can be produced in the early Universe
if a radiation dominated epoch precedes the usual inflationary stage. This
background provides a unique way to study the initial state of the Universe. We
discuss the imprint of this thermal spectra of gravitons on the cosmic
microwave back... | [
{
"created": "Fri, 24 Jul 2009 14:38:01 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Sep 2009 07:54:07 GMT",
"version": "v2"
},
{
"created": "Wed, 30 Sep 2009 08:39:21 GMT",
"version": "v3"
}
] | 2010-03-25 | [
[
"Zhao",
"W.",
""
],
[
"Baskaran",
"D.",
""
],
[
"Coles",
"P.",
""
]
] | A thermal gravitational wave background can be produced in the early Universe if a radiation dominated epoch precedes the usual inflationary stage. This background provides a unique way to study the initial state of the Universe. We discuss the imprint of this thermal spectra of gravitons on the cosmic microwave backgr... |
1603.07118 | Alfred Molina | Avas Khugaev, Naresh Dadhich and Alfred Molina | Higher dimensional generalization of Buchdahl-Vaidya-Tikekar model for
super compact star | 13 pages, 6 figures | Phys. Rev. D 94, 064065 (2016) | 10.1103/PhysRevD.94.064065 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain higher dimensional solutions for super compact star for the
Buchdahl-Vaidya-Tikekar metric ansatz. In particular, Vaidya and Tikekar
characterized the $3$-geometry by a parameter, $K$ which is related to the sign
of density gradient. It turns out that the key pressure isotropy equation
continues to have the... | [
{
"created": "Wed, 23 Mar 2016 10:19:57 GMT",
"version": "v1"
}
] | 2016-09-28 | [
[
"Khugaev",
"Avas",
""
],
[
"Dadhich",
"Naresh",
""
],
[
"Molina",
"Alfred",
""
]
] | We obtain higher dimensional solutions for super compact star for the Buchdahl-Vaidya-Tikekar metric ansatz. In particular, Vaidya and Tikekar characterized the $3$-geometry by a parameter, $K$ which is related to the sign of density gradient. It turns out that the key pressure isotropy equation continues to have the s... |
1810.00854 | Paul R. Anderson | Paul R. Anderson, Mathew J. Binkley, Jillian M. Bjerke, Paul W. Cauley | Black hole remnants may exist if Starobinsky inflation occurred | References added, a brief discussion relating to pair creation of
black holes added, sign of a higher derivative term corrected, minor changes
and corrections, 20 pages, 3 figures | Phys. Rev. D 98, 125011 (2018) | 10.1103/PhysRevD.98.125011 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Zero temperature black hole solutions to the semiclassical backreaction
equations are investigated. Evidence is provided that certain components of the
stress-energy tensors for free quantum fields at the horizon only depend on the
local geometry near the horizon. This allows the semiclassical backreaction
equations ... | [
{
"created": "Mon, 1 Oct 2018 17:49:44 GMT",
"version": "v1"
},
{
"created": "Sat, 26 Jan 2019 01:11:52 GMT",
"version": "v2"
}
] | 2019-01-29 | [
[
"Anderson",
"Paul R.",
""
],
[
"Binkley",
"Mathew J.",
""
],
[
"Bjerke",
"Jillian M.",
""
],
[
"Cauley",
"Paul W.",
""
]
] | Zero temperature black hole solutions to the semiclassical backreaction equations are investigated. Evidence is provided that certain components of the stress-energy tensors for free quantum fields at the horizon only depend on the local geometry near the horizon. This allows the semiclassical backreaction equations to... |
0812.5012 | Yuan K. Ha | Yuan K. Ha | Quantum Black Holes As Elementary Particles | Quantum black holes with a typical mass of 10^{-5} gm are
semiclassical objects. Like a heavy nucleus of an atom, they may subject to
the rules of quantum mechanics but not necessarily to the rules of quantum
field theory. 12 pages | null | null | null | gr-qc astro-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Are black holes elementary particles? Are they fermions or bosons? We
investigate the remarkable possibility that quantum black holes are the
smallest and heaviest elementary particles. We are able to construct various
fundamental quantum black holes: the spin-0, spin 1/2, spin-1, and the
Planck-charge cases, using t... | [
{
"created": "Tue, 30 Dec 2008 19:20:51 GMT",
"version": "v1"
}
] | 2009-01-02 | [
[
"Ha",
"Yuan K.",
""
]
] | Are black holes elementary particles? Are they fermions or bosons? We investigate the remarkable possibility that quantum black holes are the smallest and heaviest elementary particles. We are able to construct various fundamental quantum black holes: the spin-0, spin 1/2, spin-1, and the Planck-charge cases, using the... |
2304.05408 | Kimet Jusufi | Kimet Jusufi, Emmanuel Moulay, Jonas Mureika, Ahmed Farag Ali | Einstein-Rosen bridge from the minimal length | 9 pages, published in EPJC | Eur. Phys. J. C 83, 282 (2023) | 10.1140/epjc/s10052-023-11465-3 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use a string T-duality corrected pair of regular black holes to construct
an Einstein-Rosen (ER) bridge with the wormhole throat proportional to the
zero-point (Planck) length. This may be a geometric realization of quantum
entanglement for particle/antiparticle pairs. We point out that for an extreme
mass configu... | [
{
"created": "Tue, 11 Apr 2023 16:11:13 GMT",
"version": "v1"
}
] | 2023-04-13 | [
[
"Jusufi",
"Kimet",
""
],
[
"Moulay",
"Emmanuel",
""
],
[
"Mureika",
"Jonas",
""
],
[
"Ali",
"Ahmed Farag",
""
]
] | We use a string T-duality corrected pair of regular black holes to construct an Einstein-Rosen (ER) bridge with the wormhole throat proportional to the zero-point (Planck) length. This may be a geometric realization of quantum entanglement for particle/antiparticle pairs. We point out that for an extreme mass configura... |
gr-qc/0503030 | Miguel Alcubierre | Miguel Alcubierre | Are gauge shocks really shocks? | 7 pages, 5 figures, REVTEX 4. Revised version, including corrections
suggested by referees | Class.Quant.Grav. 22 (2005) 4071-4082 | 10.1088/0264-9381/22/19/017 | null | gr-qc | null | The existence of gauge pathologies associated with the Bona-Masso family of
generalized harmonic slicing conditions is proven for the case of simple 1+1
relativity. It is shown that these gauge pathologies are true shocks in the
sense that the characteristic lines associated with the propagation of the
gauge cross, w... | [
{
"created": "Tue, 8 Mar 2005 18:39:48 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Aug 2005 16:01:22 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Alcubierre",
"Miguel",
""
]
] | The existence of gauge pathologies associated with the Bona-Masso family of generalized harmonic slicing conditions is proven for the case of simple 1+1 relativity. It is shown that these gauge pathologies are true shocks in the sense that the characteristic lines associated with the propagation of the gauge cross, whi... |
2404.03779 | Theodoros Papanikolaou | Theodoros Papanikolaou, Shreya Banerjee, Yi-Fu Cai, Salvatore
Capozziello, Emmanuel N. Saridakis | Primordial black holes and induced gravitational waves in non-singular
matter bouncing cosmology | Accepted at JCAP | null | null | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a novel model-independent generic mechanism for primordial black
hole formation within the context of non-singular matter bouncing cosmology. In
particular, considering a short duration transition from the matter contracting
phase to the Hot Big Bang expanding Universe, we find naturally enhanced
curvature... | [
{
"created": "Thu, 4 Apr 2024 19:51:16 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Apr 2024 15:20:21 GMT",
"version": "v2"
},
{
"created": "Wed, 19 Jun 2024 17:01:43 GMT",
"version": "v3"
}
] | 2024-06-21 | [
[
"Papanikolaou",
"Theodoros",
""
],
[
"Banerjee",
"Shreya",
""
],
[
"Cai",
"Yi-Fu",
""
],
[
"Capozziello",
"Salvatore",
""
],
[
"Saridakis",
"Emmanuel N.",
""
]
] | We present a novel model-independent generic mechanism for primordial black hole formation within the context of non-singular matter bouncing cosmology. In particular, considering a short duration transition from the matter contracting phase to the Hot Big Bang expanding Universe, we find naturally enhanced curvature p... |
1209.3499 | Serge Parnovsky | Serge L. Parnovsky | Time-like singularities in General Relativity | 5 pages, accepted for publication in Herald of the University of
Kyiv, Astronomy | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We review the properties of naked time-like singularities in the General
Relativity and quantum effects in their vicinity. We demonstrate that only
line-like singularities can be formed by a collapse and are the only candidates
to break the Cosmic Censorship Principle.
| [
{
"created": "Sun, 16 Sep 2012 16:11:29 GMT",
"version": "v1"
}
] | 2012-09-18 | [
[
"Parnovsky",
"Serge L.",
""
]
] | We review the properties of naked time-like singularities in the General Relativity and quantum effects in their vicinity. We demonstrate that only line-like singularities can be formed by a collapse and are the only candidates to break the Cosmic Censorship Principle. |
2110.05657 | Alexander Simpson | Alex Simpson | From black-bounce to traversable wormhole, and beyond | V1: 20 pages, 4 figures, 73 references; MG16 Conference Proceedings,
2021. V2: Still 20 pages, 4 figures, now 76 references; MG16 Conference
Proceedings, 2021 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Key results from the literature pertaining to a class of nonsingular black
hole mimickers are explored. The family of candidate spacetimes is for now
labelled the `black-bounce' family, stemming from the original so-called
`Simpson--Visser' spacetime in static spherical symmetry. All model geometries
are analysed thr... | [
{
"created": "Tue, 12 Oct 2021 00:29:41 GMT",
"version": "v1"
},
{
"created": "Wed, 20 Oct 2021 01:45:49 GMT",
"version": "v2"
}
] | 2021-10-22 | [
[
"Simpson",
"Alex",
""
]
] | Key results from the literature pertaining to a class of nonsingular black hole mimickers are explored. The family of candidate spacetimes is for now labelled the `black-bounce' family, stemming from the original so-called `Simpson--Visser' spacetime in static spherical symmetry. All model geometries are analysed throu... |
gr-qc/0511067 | J. Ponce de Leon | J. Ponce de Leon | Reinventing spacetime on a dynamical hypersurface | References added to the Introduction, and Abstract modified. Accepted
for publication in Mod. Phys. Lett. A | Mod. Phys. Lett. A, Vol. 21, No. 12 (2006) pp. 947-959. | 10.1142/S0217732306020214 | null | gr-qc | null | In braneworld models, Space-Time-Matter and other Kaluza-Klein theories, our
spacetime is devised as a four-dimensional hypersurface {\it orthogonal} to the
extra dimension in a five-dimensional bulk. We show that the FRW line element
can be "reinvented" on a dynamical four-dimensional hypersurface, which is {\it
not... | [
{
"created": "Sun, 13 Nov 2005 00:02:40 GMT",
"version": "v1"
},
{
"created": "Sat, 11 Mar 2006 12:04:54 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"de Leon",
"J. Ponce",
""
]
] | In braneworld models, Space-Time-Matter and other Kaluza-Klein theories, our spacetime is devised as a four-dimensional hypersurface {\it orthogonal} to the extra dimension in a five-dimensional bulk. We show that the FRW line element can be "reinvented" on a dynamical four-dimensional hypersurface, which is {\it not} ... |
2110.05135 | Angelo Tartaglia | Angelo Tartaglia, Massimo Bassan, Giuseppe Pucacco, Valerio Ferroni,
Daniele Vetrugno | Dark gravitomagnetism with LISA and gravitational waves space detectors | 13, 2 figures, to be published in the Proceedings of the 16th Marcel
Grossmann meeting (2021) | null | null | null | gr-qc astro-ph.GA physics.space-ph | http://creativecommons.org/licenses/by/4.0/ | We present here the proposal to use the LISA interferometer for detecting the
gravito-magnetic field due to the rotation of the Milky Way, including the
contribution given by the dark matter halo. The galactic signal would be
superposed to the gravitomagnetic field of the Sun. The technique to be used is
based on the... | [
{
"created": "Mon, 11 Oct 2021 10:28:33 GMT",
"version": "v1"
}
] | 2021-10-12 | [
[
"Tartaglia",
"Angelo",
""
],
[
"Bassan",
"Massimo",
""
],
[
"Pucacco",
"Giuseppe",
""
],
[
"Ferroni",
"Valerio",
""
],
[
"Vetrugno",
"Daniele",
""
]
] | We present here the proposal to use the LISA interferometer for detecting the gravito-magnetic field due to the rotation of the Milky Way, including the contribution given by the dark matter halo. The galactic signal would be superposed to the gravitomagnetic field of the Sun. The technique to be used is based on the a... |
2303.16610 | Peng-Cheng Li | Tieguang Zi and Peng-Cheng Li | Probing the Tidal Deformability of the Central Object in an Extreme Mass
Ratio Inspiral with Analytic Kludge Waveforms | 12 pages, 4 figures,v2: minor changes, accepted by PRD | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We develop approximate ``analytic-kludge" waveforms to describe the inspiral
of a stellar-mass compact object into a supermassive compact object in an
extreme mass ratio inspiral (EMRI) scenario. The deformability of the
supermassive compact object is characterized by a dimensionless quantity called
the tidal Love nu... | [
{
"created": "Wed, 29 Mar 2023 11:49:18 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Jun 2023 01:44:04 GMT",
"version": "v2"
}
] | 2023-06-22 | [
[
"Zi",
"Tieguang",
""
],
[
"Li",
"Peng-Cheng",
""
]
] | We develop approximate ``analytic-kludge" waveforms to describe the inspiral of a stellar-mass compact object into a supermassive compact object in an extreme mass ratio inspiral (EMRI) scenario. The deformability of the supermassive compact object is characterized by a dimensionless quantity called the tidal Love numb... |
gr-qc/0605147 | Avtar Sehra | Avtar Singh Sehra | Quantum Modified Null Trajectories in Schwarzschild Spacetime | superluminal quantum modified photon propagation | null | null | null | gr-qc | null | The photon vacuum polarization effect in curved spacetime leads to
birefringence, i.e. the photon velocity becomes greater than (or less than) the
speed of light depending on its polarization. We investigate this phenomenon in
a Schwarzschild curved spacetime.
| [
{
"created": "Tue, 30 May 2006 16:32:47 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Sehra",
"Avtar Singh",
""
]
] | The photon vacuum polarization effect in curved spacetime leads to birefringence, i.e. the photon velocity becomes greater than (or less than) the speed of light depending on its polarization. We investigate this phenomenon in a Schwarzschild curved spacetime. |
2402.05178 | David Pere\~n\'iguez Dr | David Pere\~niguez, Marina de Amicis, Richard Brito and Rodrigo
Panosso Macedo | Superradiant Instability of Magnetic Black Holes | 5+pages, 4+figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Black hole superradiance has proven being very valuable in several realms of
gravitational physics, and holds a promising discovery potential. In this
paper, we show how it can sheed light on a long standing problem in physics,
the quest for magnetic monopoles in the Universe. Placing them in the interior
of primordi... | [
{
"created": "Wed, 7 Feb 2024 19:00:03 GMT",
"version": "v1"
}
] | 2024-02-09 | [
[
"Pereñiguez",
"David",
""
],
[
"de Amicis",
"Marina",
""
],
[
"Brito",
"Richard",
""
],
[
"Macedo",
"Rodrigo Panosso",
""
]
] | Black hole superradiance has proven being very valuable in several realms of gravitational physics, and holds a promising discovery potential. In this paper, we show how it can sheed light on a long standing problem in physics, the quest for magnetic monopoles in the Universe. Placing them in the interior of primordial... |
1803.02355 | Alessia Platania | Alfio Bonanno, Alessia Platania and Frank Saueressig | Cosmological bounds on the field content of asymptotically safe
gravity-matter models | 10 pages, 2 figures. V2: references added. Matches published version | null | 10.1016/j.physletb.2018.06.047 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use the non-Gaussian fixed points (NGFPs) appearing in the renormalization
group flow of gravity and gravity-matter systems to construct models of
NGFP-driven inflation via a renormalization group improvement scheme. The
cosmological predictions of these models depend sensitively on the
characteristic properties o... | [
{
"created": "Tue, 6 Mar 2018 19:00:00 GMT",
"version": "v1"
},
{
"created": "Tue, 28 Aug 2018 16:34:07 GMT",
"version": "v2"
}
] | 2018-08-29 | [
[
"Bonanno",
"Alfio",
""
],
[
"Platania",
"Alessia",
""
],
[
"Saueressig",
"Frank",
""
]
] | We use the non-Gaussian fixed points (NGFPs) appearing in the renormalization group flow of gravity and gravity-matter systems to construct models of NGFP-driven inflation via a renormalization group improvement scheme. The cosmological predictions of these models depend sensitively on the characteristic properties of ... |
gr-qc/0002037 | Paul Federbush | Paul Federbush (Univ. of Michigan) | On Schwarzschild-Like Solutions in Curvature-Quadratic Gravity | Now 5 explicit solutions! 6 pages LaTeX | null | null | null | gr-qc hep-th | null | Partial results are obtained for Schwarzschild- like solutions in a gravity
theory with action density (-g)^(1/2)[Rik^2+bR^2]. A seven parameter family of
implicit solutions is found. A number of explicit solutions are also exhibited.
| [
{
"created": "Wed, 9 Feb 2000 20:34:21 GMT",
"version": "v1"
},
{
"created": "Tue, 14 Mar 2000 20:43:25 GMT",
"version": "v2"
},
{
"created": "Wed, 15 Mar 2000 13:34:13 GMT",
"version": "v3"
},
{
"created": "Thu, 16 Mar 2000 14:22:27 GMT",
"version": "v4"
},
{
"cr... | 2007-05-23 | [
[
"Federbush",
"Paul",
"",
"Univ. of Michigan"
]
] | Partial results are obtained for Schwarzschild- like solutions in a gravity theory with action density (-g)^(1/2)[Rik^2+bR^2]. A seven parameter family of implicit solutions is found. A number of explicit solutions are also exhibited. |
1006.3788 | Jonathan Thornburg | Jonathan Thornburg | Highly accurate and efficient self-force computations using time-domain
methods: Error estimates, validation, and optimization | 27 pages, 12 eps figures (10 of them color, but all are viewable ok
in black-and-white), uses RevTeX 4.1 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | If a small "particle" of mass $\mu M$ (with $\mu \ll 1$) orbits a
Schwarzschild or Kerr black hole of mass $M$, the particle is subject to an
$\O(\mu)$ radiation-reaction "self-force". Here I argue that it's valuable to
compute this self-force highly accurately (relative error of $\ltsim 10^{-6}$)
and efficiently, an... | [
{
"created": "Fri, 18 Jun 2010 19:54:32 GMT",
"version": "v1"
}
] | 2010-06-21 | [
[
"Thornburg",
"Jonathan",
""
]
] | If a small "particle" of mass $\mu M$ (with $\mu \ll 1$) orbits a Schwarzschild or Kerr black hole of mass $M$, the particle is subject to an $\O(\mu)$ radiation-reaction "self-force". Here I argue that it's valuable to compute this self-force highly accurately (relative error of $\ltsim 10^{-6}$) and efficiently, and ... |
0811.2237 | Aleksandar Rakic | Aleksandar Rakic and Dominik J. Schwarz | Newtonian Aspects of General Relativistic Galaxy Models | 7 pages, no figures, talk given at the XV National Conference of
Astronomers of Serbia, Belgrade, 2-5 October 2008 | null | null | BI-TP 2008/37 | gr-qc astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Many cosmological observations call for the existence of dark matter. The
most direct evidence for dark matter is inferred from the measured flatness of
galactic rotation curves. The latter is based on Newtonian gravity. Alternative
approaches to the rotation curve problem by means of general relativity have
recently... | [
{
"created": "Thu, 13 Nov 2008 23:28:48 GMT",
"version": "v1"
}
] | 2008-11-19 | [
[
"Rakic",
"Aleksandar",
""
],
[
"Schwarz",
"Dominik J.",
""
]
] | Many cosmological observations call for the existence of dark matter. The most direct evidence for dark matter is inferred from the measured flatness of galactic rotation curves. The latter is based on Newtonian gravity. Alternative approaches to the rotation curve problem by means of general relativity have recently b... |
1409.3573 | Ippocratis Saltas Dr | Antonio Padilla and Ippocratis D. Saltas | A note on classical and quantum unimodular gravity | 5 pages; v2: Some clarifying comments added. Version to appear in
European Physical Journal C | null | 10.1140/epjc/s10052-015-3767-0 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss unimodular gravity at a classical level, and in terms of its
extension into the UV through an appropriate path integral representation.
Classically, unimodular gravity is simply a gauge fixed version of General
Relativity (GR), and as such it yields identical dynamics and physical
predictions. We clarify t... | [
{
"created": "Thu, 11 Sep 2014 20:00:06 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Nov 2015 01:19:35 GMT",
"version": "v2"
}
] | 2016-01-20 | [
[
"Padilla",
"Antonio",
""
],
[
"Saltas",
"Ippocratis D.",
""
]
] | We discuss unimodular gravity at a classical level, and in terms of its extension into the UV through an appropriate path integral representation. Classically, unimodular gravity is simply a gauge fixed version of General Relativity (GR), and as such it yields identical dynamics and physical predictions. We clarify thi... |
2004.05632 | Yerko V\'asquez | Almendra Arag\'on, Ram\'on B\'ecar, P. A. Gonz\'alez and Yerko
V\'asquez | Perturbative and nonperturbative quasinormal modes of 4D
Einstein-Gauss-Bonnet black holes | accepted for publication in EPJC | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the propagation of probe scalar fields in the background of 4D
Einstein-Gauss-Bonnet black holes with anti-de Sitter (AdS) asymptotics and
calculate the quasinormal modes. Mainly, we show that the quasinormal spectrum
consists of two different branches, a branch perturbative in the Gauss-Bonnet
coupling cons... | [
{
"created": "Sun, 12 Apr 2020 15:22:07 GMT",
"version": "v1"
},
{
"created": "Tue, 21 Apr 2020 01:07:58 GMT",
"version": "v2"
},
{
"created": "Wed, 29 Jul 2020 19:42:20 GMT",
"version": "v3"
}
] | 2020-07-31 | [
[
"Aragón",
"Almendra",
""
],
[
"Bécar",
"Ramón",
""
],
[
"González",
"P. A.",
""
],
[
"Vásquez",
"Yerko",
""
]
] | We study the propagation of probe scalar fields in the background of 4D Einstein-Gauss-Bonnet black holes with anti-de Sitter (AdS) asymptotics and calculate the quasinormal modes. Mainly, we show that the quasinormal spectrum consists of two different branches, a branch perturbative in the Gauss-Bonnet coupling consta... |
gr-qc/0201092 | Edward Anderson | Edward Anderson and Julian Barbour | Interacting vector fields in Relativity without Relativity | Replaced with final version accepted by Classical and Quantum Gravity
(14 pages, no figures) | Class.Quant.Grav. 19 (2002) 3249-3262 | 10.1088/0264-9381/19/12/309 | null | gr-qc | null | Barbour, Foster and \'{O} Murchadha have recently developed a new framework,
called here {\it{the 3-space approach}}, for the formulation of classical
bosonic dynamics. Neither time nor a locally Minkowskian structure of spacetime
are presupposed. Both arise as emergent features of the world from
geodesic-type dynami... | [
{
"created": "Tue, 29 Jan 2002 19:34:44 GMT",
"version": "v1"
},
{
"created": "Tue, 28 May 2002 16:30:56 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Anderson",
"Edward",
""
],
[
"Barbour",
"Julian",
""
]
] | Barbour, Foster and \'{O} Murchadha have recently developed a new framework, called here {\it{the 3-space approach}}, for the formulation of classical bosonic dynamics. Neither time nor a locally Minkowskian structure of spacetime are presupposed. Both arise as emergent features of the world from geodesic-type dynamics... |
1502.05695 | David W. Tian | David Wenjie Tian, Ivan Booth | Lovelock-Brans-Dicke gravity | RevTex 13 pages. Minor changes are made to match the version
published in Classical and Quantum Gravity | Class. Quantum Grav. 33 (2016), 045001 | 10.1088/0264-9381/33/4/045001 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | According to Lovelock's theorem, the Hilbert-Einstein and the Lovelock
actions are indistinguishable from their field equations. However, they have
different scalar-tensor counterparts, which correspond to the Brans-Dicke and
the \emph{Lovelock-Brans-Dicke} (LBD) gravities, respectively. In this paper
the LBD model o... | [
{
"created": "Thu, 19 Feb 2015 20:42:25 GMT",
"version": "v1"
},
{
"created": "Mon, 2 Mar 2015 19:43:54 GMT",
"version": "v2"
},
{
"created": "Mon, 27 Jul 2015 19:16:55 GMT",
"version": "v3"
},
{
"created": "Thu, 21 Jan 2016 17:55:42 GMT",
"version": "v4"
}
] | 2016-01-25 | [
[
"Tian",
"David Wenjie",
""
],
[
"Booth",
"Ivan",
""
]
] | According to Lovelock's theorem, the Hilbert-Einstein and the Lovelock actions are indistinguishable from their field equations. However, they have different scalar-tensor counterparts, which correspond to the Brans-Dicke and the \emph{Lovelock-Brans-Dicke} (LBD) gravities, respectively. In this paper the LBD model of ... |
2311.05352 | Jie Jiang | Hu Zhu and Jie Jiang | Generalized Covariant Entropy Bound in Einstein Gravity with Quadratic
Curvature Corrections | 7 pages | null | null | null | gr-qc | http://creativecommons.org/publicdomain/zero/1.0/ | We explore the generalized covariant entropy bound in the theory where
Einstein gravity is perturbed by quadratic curvature terms, which can be viewed
as the first-order quantum correction to Einstein gravity. By replacing the
Bekenstein-Hawking entropy with the holographic entanglement entropy of this
theory and int... | [
{
"created": "Thu, 9 Nov 2023 13:24:12 GMT",
"version": "v1"
}
] | 2023-11-10 | [
[
"Zhu",
"Hu",
""
],
[
"Jiang",
"Jie",
""
]
] | We explore the generalized covariant entropy bound in the theory where Einstein gravity is perturbed by quadratic curvature terms, which can be viewed as the first-order quantum correction to Einstein gravity. By replacing the Bekenstein-Hawking entropy with the holographic entanglement entropy of this theory and intro... |
1109.2551 | Sigbjorn Hervik | Sigbjorn Hervik | A spacetime not characterised by its invariants is of aligned type II | 14pages, CQG to appear | Class. Quantum Grav. 28 (2011) 215009 | 10.1088/0264-9381/28/21/215009 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | By using invariant theory we show that a (higher-dimensional) Lorentzian
metric that is not characterised by its invariants must be of aligned type II;
i.e., there exists a frame such that all the curvature tensors are
simultaneously of type II. This implies, using the boost-weight decomposition,
that for such a metr... | [
{
"created": "Mon, 12 Sep 2011 18:05:38 GMT",
"version": "v1"
}
] | 2015-05-30 | [
[
"Hervik",
"Sigbjorn",
""
]
] | By using invariant theory we show that a (higher-dimensional) Lorentzian metric that is not characterised by its invariants must be of aligned type II; i.e., there exists a frame such that all the curvature tensors are simultaneously of type II. This implies, using the boost-weight decomposition, that for such a metric... |
1005.2600 | Israel Quiros | Israel Quiros, Eduardo Teste | Vacuum Structure of Cosmologically Viable Quadratic Modifications of
Gravity that are Functions of the Gauss-Bonnet Invariant | 10 pages, Latex, no figures. Discussion made more clear through the
use of new field variables. Several misprints and minor errors corrected.
References added. An error in an equation of a model of section V.C,
originated from a missprint in Ref. [19], corrected. Corresponding
computations and original comments... | null | null | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform a thorough study of the theoretical consistency of recently
proposed, viable, quadratic modifications of gravity that are functions of the
the Gauss-Bonnet invariant, regarding the stability of their perturbations
around vacuum, maximally symmetric spaces of constant curvature. We pay special
attention, in... | [
{
"created": "Fri, 14 May 2010 18:41:52 GMT",
"version": "v1"
},
{
"created": "Wed, 19 May 2010 20:12:17 GMT",
"version": "v2"
},
{
"created": "Fri, 21 May 2010 15:11:52 GMT",
"version": "v3"
},
{
"created": "Wed, 26 May 2010 17:05:32 GMT",
"version": "v4"
}
] | 2010-05-27 | [
[
"Quiros",
"Israel",
""
],
[
"Teste",
"Eduardo",
""
]
] | We perform a thorough study of the theoretical consistency of recently proposed, viable, quadratic modifications of gravity that are functions of the the Gauss-Bonnet invariant, regarding the stability of their perturbations around vacuum, maximally symmetric spaces of constant curvature. We pay special attention, in p... |
2406.02101 | Xuefeng Feng | Xuefeng Feng, Huan Yang | Universal gravitational self-force for a point mass orbiting around a
compact star | 18 pages, 13 figures, 1 table, Comments are welcome | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we study the gravitational back-reaction (i.e., the
"self-force") of a point mass moving around a non-rotating, compact star on a
circular orbit. We find that the additional self-force, comparing with the case
with a point mass orbiting around a Schwarzschild black hole, can be well
characterized by an ... | [
{
"created": "Tue, 4 Jun 2024 08:32:19 GMT",
"version": "v1"
}
] | 2024-06-05 | [
[
"Feng",
"Xuefeng",
""
],
[
"Yang",
"Huan",
""
]
] | In this work, we study the gravitational back-reaction (i.e., the "self-force") of a point mass moving around a non-rotating, compact star on a circular orbit. We find that the additional self-force, comparing with the case with a point mass orbiting around a Schwarzschild black hole, can be well characterized by an un... |
2305.18048 | Diganta Bandopadhyay | Diganta Bandopadhyay and Christopher J. Moore | LISA stellar-mass black hole searches with semicoherent and
particle-swarm methods | 15 pages + appendices, 9 figures. Accepted in Physical Review D on 8
September 2023 | Phys. Rev. D 108, 084014 (2023) | 10.1103/PhysRevD.108.084014 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper considers the problem of searching for quiet, long-duration and
broadband gravitational wave signals, such as stellar-mass binary black hole
binaries, in mock LISA data. We propose a method that combines a semi-coherent
likelihood with the use of a particle swarm optimizer capable of efficiently
exploring ... | [
{
"created": "Mon, 29 May 2023 12:26:49 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Oct 2023 14:25:28 GMT",
"version": "v2"
}
] | 2023-10-17 | [
[
"Bandopadhyay",
"Diganta",
""
],
[
"Moore",
"Christopher J.",
""
]
] | This paper considers the problem of searching for quiet, long-duration and broadband gravitational wave signals, such as stellar-mass binary black hole binaries, in mock LISA data. We propose a method that combines a semi-coherent likelihood with the use of a particle swarm optimizer capable of efficiently exploring a ... |
gr-qc/0007002 | Jizong Lu | Xin-zhou Li and Jizong Lu | Global monopoles in the Brans-Dicke theory | Latex 6 pages, To be published in Phys. Rev. D | Phys.Rev. D62 (2000) 107501 | 10.1103/PhysRevD.62.107501 | null | gr-qc | null | A gravitating global monopole produces a repulsive grativational field
outside the core in addition to a solid angular deficit in the Brans-Dicke
theory. As a new feature, the angular deficit is dependent on the values of
\phi_{\infty} and \omega, where \phi_{\infty} is asymptotic value of scalar
field in space-like ... | [
{
"created": "Mon, 3 Jul 2000 02:59:38 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Li",
"Xin-zhou",
""
],
[
"Lu",
"Jizong",
""
]
] | A gravitating global monopole produces a repulsive grativational field outside the core in addition to a solid angular deficit in the Brans-Dicke theory. As a new feature, the angular deficit is dependent on the values of \phi_{\infty} and \omega, where \phi_{\infty} is asymptotic value of scalar field in space-like in... |
1806.09333 | George Pappas Dr | Kostas Glampedakis and George Pappas | The modification of photon trapping orbits as a diagnostic of non-Kerr
spacetimes | 27 pages, 19 figures, changes and expanded discussion on several
topics, such as the off-equatorial photon rings and the loss of low
inclination photon trapping orbits, after the feedback from the referees | Phys. Rev. D 99, 124041 (2019) | 10.1103/PhysRevD.99.124041 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Photon circular orbits, an extreme case of light deflection, are among the
hallmarks of black holes and are known to play a central role in a variety of
phenomena related to these extreme objects. The very existence of such orbits
when motion is not confined in the equatorial plane, i.e. spherical orbits, is
indeed a... | [
{
"created": "Mon, 25 Jun 2018 09:01:55 GMT",
"version": "v1"
},
{
"created": "Tue, 9 Apr 2019 15:03:05 GMT",
"version": "v2"
}
] | 2019-06-28 | [
[
"Glampedakis",
"Kostas",
""
],
[
"Pappas",
"George",
""
]
] | Photon circular orbits, an extreme case of light deflection, are among the hallmarks of black holes and are known to play a central role in a variety of phenomena related to these extreme objects. The very existence of such orbits when motion is not confined in the equatorial plane, i.e. spherical orbits, is indeed a s... |
0808.1035 | L. A. Glinka | L. A. Glinka | Global One-Dimensionality conjecture within Quantum General Relativity | 16 pages, no figures, to appear in Gravitation and Cosmology | Grav. Cosmol.16:7-15,2010 | 10.1134/S0202289310010020 | null | gr-qc hep-th math-ph math.MP quant-ph | http://creativecommons.org/licenses/by/3.0/ | The simple quantum gravity model, based on a new conjecture within the
canonically quantized 3+1 general relativity, is presented. The conjecture
states that matter fields are functionals of an embedding volume form only, and
reduces the quantum geometrodynamics. By dimensional reduction the resulting
theory is prese... | [
{
"created": "Thu, 7 Aug 2008 18:48:08 GMT",
"version": "v1"
},
{
"created": "Fri, 8 Aug 2008 09:46:31 GMT",
"version": "v2"
},
{
"created": "Sun, 24 Aug 2008 18:35:17 GMT",
"version": "v3"
},
{
"created": "Tue, 26 Aug 2008 12:14:52 GMT",
"version": "v4"
},
{
"cre... | 2010-05-27 | [
[
"Glinka",
"L. A.",
""
]
] | The simple quantum gravity model, based on a new conjecture within the canonically quantized 3+1 general relativity, is presented. The conjecture states that matter fields are functionals of an embedding volume form only, and reduces the quantum geometrodynamics. By dimensional reduction the resulting theory is present... |
1310.7985 | Benjamin K Tippett | Benjamin K. Tippett, David Tsang | Traversable Achronal Retrograde Domains In Spacetime | 8 pages, If the contents of this are too technical for you visit
arXiv:1310.7983 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | There are many spacetime geometries in general relativity which contain
closed timelike curves. A layperson might say that retrograde time travel is
possible in such spacetimes. To date no one has discovered a spacetime geometry
which emulates what a layperson would describe as a time machine.
The purpose of this p... | [
{
"created": "Tue, 29 Oct 2013 23:50:29 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Nov 2013 21:29:35 GMT",
"version": "v2"
}
] | 2013-11-06 | [
[
"Tippett",
"Benjamin K.",
""
],
[
"Tsang",
"David",
""
]
] | There are many spacetime geometries in general relativity which contain closed timelike curves. A layperson might say that retrograde time travel is possible in such spacetimes. To date no one has discovered a spacetime geometry which emulates what a layperson would describe as a time machine. The purpose of this paper... |
1202.5146 | Chongoh Lee | Chong Oh Lee | The holographic superconductors in higher-dimensional AdS soliton | LaTeX, 16 pages, 5 figures, typos corrected, one reference added,
version to appear in European Physical Journal C | null | 10.1140/epjc/s10052-012-2092-0 | null | gr-qc | http://creativecommons.org/licenses/by/3.0/ | We explore the behaviors of the holographic superconductors at zero
temperature for a charged scalar field coupled to a Maxwell field in
higher-dimensional AdS soliton spacetime via analytical way. In the probe
limit, we obtain the critical chemical potentials increase linearly as a total
dimension $d$ grows up. We f... | [
{
"created": "Thu, 23 Feb 2012 10:39:43 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Jul 2012 10:15:51 GMT",
"version": "v2"
},
{
"created": "Mon, 30 Jul 2012 19:23:46 GMT",
"version": "v3"
}
] | 2015-06-04 | [
[
"Lee",
"Chong Oh",
""
]
] | We explore the behaviors of the holographic superconductors at zero temperature for a charged scalar field coupled to a Maxwell field in higher-dimensional AdS soliton spacetime via analytical way. In the probe limit, we obtain the critical chemical potentials increase linearly as a total dimension $d$ grows up. We fin... |
1410.4590 | Jorge Rocha | Rog\'erio Jorge, Ednilton S. de Oliveira and Jorge V. Rocha | Greybody factors for rotating black holes in higher dimensions | 39 pages, 17 figures; v2: updated references and minor corrections,
matches published version | Class. Quantum Grav. 32 (2015) 065008 | 10.1088/0264-9381/32/6/065008 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform a thorough study of greybody factors for minimally-coupled scalar
fields propagating on the background of rotating black holes in higher (odd)
dimensions with all angular momenta set equal. For this special case, the
solution enjoys an enhanced symmetry, which translates into the advantageous
feature of be... | [
{
"created": "Thu, 16 Oct 2014 21:09:14 GMT",
"version": "v1"
},
{
"created": "Wed, 4 Mar 2015 23:40:36 GMT",
"version": "v2"
}
] | 2015-03-06 | [
[
"Jorge",
"Rogério",
""
],
[
"de Oliveira",
"Ednilton S.",
""
],
[
"Rocha",
"Jorge V.",
""
]
] | We perform a thorough study of greybody factors for minimally-coupled scalar fields propagating on the background of rotating black holes in higher (odd) dimensions with all angular momenta set equal. For this special case, the solution enjoys an enhanced symmetry, which translates into the advantageous feature of bein... |
1911.04514 | Alexander Grant | B\'eatrice Bonga, Alexander M. Grant, Kartik Prabhu | Angular momentum at null infinity in Einstein-Maxwell theory | 43 pages; v2: fixed typos, matches published version | Phys. Rev. D 101, 044013 (2020) | 10.1103/PhysRevD.101.044013 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | On Minkowski spacetime, the angular momentum flux through null infinity of
Maxwell fields, computed using the stress-energy tensor, depends not only on
the radiative degrees of freedom, but also on the Coulombic parts. However, the
angular momentum also can be computed using other conserved currents associated
with a... | [
{
"created": "Mon, 11 Nov 2019 19:00:57 GMT",
"version": "v1"
},
{
"created": "Fri, 14 Feb 2020 16:41:08 GMT",
"version": "v2"
}
] | 2020-02-17 | [
[
"Bonga",
"Béatrice",
""
],
[
"Grant",
"Alexander M.",
""
],
[
"Prabhu",
"Kartik",
""
]
] | On Minkowski spacetime, the angular momentum flux through null infinity of Maxwell fields, computed using the stress-energy tensor, depends not only on the radiative degrees of freedom, but also on the Coulombic parts. However, the angular momentum also can be computed using other conserved currents associated with a K... |
1605.06617 | Roberto Casadio | R. Casadio, A. Giugno, A. Giusti | Global and Local Horizon Quantum Mechanics | 13 pages, no figures. Added section about GUP and Hawking radiation.
Version accepted in GERG | null | 10.1007/s10714-017-2198-7 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Horizons are classical causal structures that arise in systems with sharply
defined energy and corresponding gravitational radius. A global gravitational
radius operator can be introduced for a static and spherically symmetric
quantum mechanical matter state by lifting the classical "Hamiltonian"
constraint that rela... | [
{
"created": "Sat, 21 May 2016 10:17:45 GMT",
"version": "v1"
},
{
"created": "Sat, 14 Jan 2017 08:09:56 GMT",
"version": "v2"
}
] | 2017-02-08 | [
[
"Casadio",
"R.",
""
],
[
"Giugno",
"A.",
""
],
[
"Giusti",
"A.",
""
]
] | Horizons are classical causal structures that arise in systems with sharply defined energy and corresponding gravitational radius. A global gravitational radius operator can be introduced for a static and spherically symmetric quantum mechanical matter state by lifting the classical "Hamiltonian" constraint that relate... |
2405.12685 | Crist\'obal Laporte | Jesse Daas, Cristobal Laporte, Frank Saueressig and Tim van Dijk | Rethinking the Effective Field Theory formulation of Gravity | 10 pages. Essay received Honorable Mention at the Gravity Research
Foundation 2024 Awards for Essays on Gravitation. v2: fixed typos and updated
to match published version | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | General relativity is highly successful in explaining a wide range of
gravitational phenomena including the gravitational waves emitted by binary
systems and the shadows cast by supermassive black holes. From a modern
perspective the theory is not fundamental though, but constitutes the lowest
order term in an effect... | [
{
"created": "Tue, 21 May 2024 11:19:51 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Jul 2024 07:42:25 GMT",
"version": "v2"
}
] | 2024-07-26 | [
[
"Daas",
"Jesse",
""
],
[
"Laporte",
"Cristobal",
""
],
[
"Saueressig",
"Frank",
""
],
[
"van Dijk",
"Tim",
""
]
] | General relativity is highly successful in explaining a wide range of gravitational phenomena including the gravitational waves emitted by binary systems and the shadows cast by supermassive black holes. From a modern perspective the theory is not fundamental though, but constitutes the lowest order term in an effectiv... |
gr-qc/9704031 | Stanislav Alexeyev | S.O. Alexeyev | Internal Structure of a Gauss-Bonnet Black Hole | 4 pages, LaTeX, gc-97.sty (included), 7 LaTeX figures (included) | Grav.Cosmol.3:161-164,1997 | null | null | gr-qc | null | Black holes are studied in the frames of superstring theory using a
non-trivial numerical integration method. A low energy string action containing
graviton, dilaton, Gauss-Bonnet and Maxwell contributions is considered.
Four-dimensional black hole solutions are studied inside and outside the event
horizon. The inter... | [
{
"created": "Fri, 11 Apr 1997 14:55:40 GMT",
"version": "v1"
}
] | 2014-11-17 | [
[
"Alexeyev",
"S. O.",
""
]
] | Black holes are studied in the frames of superstring theory using a non-trivial numerical integration method. A low energy string action containing graviton, dilaton, Gauss-Bonnet and Maxwell contributions is considered. Four-dimensional black hole solutions are studied inside and outside the event horizon. The interna... |
1903.01662 | Leonid Perlov | Leonid Perlov | SO(2,1) Connection in Timelike 3+1 Foliation | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We introduce 3+1 timelike foliation of the four dimensional Lorentz manifold
to derive the 3+1 Sen-Ashtekar-Barbero-Immirzi formalism in case of $SO(2,1)$
rotation gauge group, which is possible due to the existence of the $so(2,1)$
algebra isomorphism to $R^3_{2,1}$ algebra with respect to the vector product.
We pro... | [
{
"created": "Tue, 5 Mar 2019 04:32:01 GMT",
"version": "v1"
},
{
"created": "Thu, 14 Mar 2019 18:41:13 GMT",
"version": "v2"
},
{
"created": "Wed, 15 May 2019 04:58:51 GMT",
"version": "v3"
},
{
"created": "Wed, 3 Jul 2019 23:42:00 GMT",
"version": "v4"
}
] | 2019-07-05 | [
[
"Perlov",
"Leonid",
""
]
] | We introduce 3+1 timelike foliation of the four dimensional Lorentz manifold to derive the 3+1 Sen-Ashtekar-Barbero-Immirzi formalism in case of $SO(2,1)$ rotation gauge group, which is possible due to the existence of the $so(2,1)$ algebra isomorphism to $R^3_{2,1}$ algebra with respect to the vector product. We prove... |
1801.04539 | Stefano Ansoldi | S. Ansoldi, Z. Merali, E. I. Guendelman | From Black Holes to Baby Universes: Exploring the Possibility of
Creating a Cosmos in the Laboratory | To appear in the proceedings for the Bahamas Advanced Study Institute
and Conferences 2017, Stella Maris, the Bahamas, and the "Big Bang in a
Little Room" event, University of the Bahamas, Nassau, the Bahamas | Bulg. J. Phys. vol.45 no.2 (2018), pp. 203-220 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the essential features of baby-universe production, starting from
a description of black holes and wormholes, in terms of the causal structure of
spacetime, and following a qualitative review of the connection between vacuum
decay and inflation in early universe cosmology. Related open questions are
also a... | [
{
"created": "Sun, 14 Jan 2018 11:57:00 GMT",
"version": "v1"
}
] | 2018-09-24 | [
[
"Ansoldi",
"S.",
""
],
[
"Merali",
"Z.",
""
],
[
"Guendelman",
"E. I.",
""
]
] | We discuss the essential features of baby-universe production, starting from a description of black holes and wormholes, in terms of the causal structure of spacetime, and following a qualitative review of the connection between vacuum decay and inflation in early universe cosmology. Related open questions are also add... |
1511.09125 | Israel Quiros | Roberto De Arcia, Tame Gonzalez, Genly Le\'on, Ulises Nucamendi,
Israel Quiros | Cubic Derivative Interactions and Asymptotic Dynamics of the Galileon
Vacuum | 16 pages, 12 eps figures | null | 10.1088/0264-9381/33/12/125036 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we apply the tools of the dynamical systems theory in order to
uncover the whole asymptotic structure of the vacuum interactions of a galileon
model with a cubic derivative interaction term. It is shown that, contrary to
what occurs in the presence of background matter, the galileon interactions of
vacu... | [
{
"created": "Mon, 30 Nov 2015 01:06:03 GMT",
"version": "v1"
}
] | 2016-06-01 | [
[
"De Arcia",
"Roberto",
""
],
[
"Gonzalez",
"Tame",
""
],
[
"León",
"Genly",
""
],
[
"Nucamendi",
"Ulises",
""
],
[
"Quiros",
"Israel",
""
]
] | In this paper we apply the tools of the dynamical systems theory in order to uncover the whole asymptotic structure of the vacuum interactions of a galileon model with a cubic derivative interaction term. It is shown that, contrary to what occurs in the presence of background matter, the galileon interactions of vacuum... |
2212.10580 | Stefano Bondani | Stefano Bondani and Sergio Luigi Cacciatori | Non canonical polarizations of Gravitational Waves | 10 pages, 8 figures | Eur. Phys. J. C (2023) 83: 310 | 10.1140/epjc/s10052-023-11502-1 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We hereby propose an alternative and additional angle on the nature of
gravitational waves (GWs), postulating the theoretical and experimental
possibility that GWs carry a deformation of the time component of spacetime,
other than the spatial one. By explicitly working outside of the
transverse-traceless gauge, we pr... | [
{
"created": "Tue, 20 Dec 2022 19:00:04 GMT",
"version": "v1"
},
{
"created": "Sat, 3 Jun 2023 09:00:46 GMT",
"version": "v2"
}
] | 2023-06-06 | [
[
"Bondani",
"Stefano",
""
],
[
"Cacciatori",
"Sergio Luigi",
""
]
] | We hereby propose an alternative and additional angle on the nature of gravitational waves (GWs), postulating the theoretical and experimental possibility that GWs carry a deformation of the time component of spacetime, other than the spatial one. By explicitly working outside of the transverse-traceless gauge, we prop... |
1003.5122 | Benny Walther | Christian Lubich, Benny Walther, Bernd Bruegmann | Symplectic Integration of Post-Newtonian Equations of Motion with Spin | 9 pages, 6 figures | Phys.Rev.D81:104025,2010 | 10.1103/PhysRevD.81.104025 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a non-canonically symplectic integration scheme tailored to
numerically computing the post-Newtonian motion of a spinning black-hole
binary. Using a splitting approach we combine the flows of orbital and spin
contributions. In the context of the splitting, it is possible to integrate the
individual terms o... | [
{
"created": "Fri, 26 Mar 2010 12:08:16 GMT",
"version": "v1"
}
] | 2010-05-25 | [
[
"Lubich",
"Christian",
""
],
[
"Walther",
"Benny",
""
],
[
"Bruegmann",
"Bernd",
""
]
] | We present a non-canonically symplectic integration scheme tailored to numerically computing the post-Newtonian motion of a spinning black-hole binary. Using a splitting approach we combine the flows of orbital and spin contributions. In the context of the splitting, it is possible to integrate the individual terms of ... |
1502.02988 | Ranjan Sharma | Ranjan Sharma, Shyam Das and Ramesh Tikekar | A class of conformally flat solutions for systems undergoing radiative
gravitational collapse | To appear in Gen. Relativ. Grav | Gen. Relativ. Gravit (2015) 47:25 | 10.1007/s10714-015-1869-5 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a class of conformally flat solutions of the Einstein's field
equations for spherical systems undergoing gravitational collapse accompanied
with radial heat flux. The interior space-time of the collapsing matter is
chosen to be conformal to the Robertson-Walker space-time so that its Weyl
tensor vanishes i... | [
{
"created": "Sun, 8 Feb 2015 19:23:01 GMT",
"version": "v1"
}
] | 2017-11-20 | [
[
"Sharma",
"Ranjan",
""
],
[
"Das",
"Shyam",
""
],
[
"Tikekar",
"Ramesh",
""
]
] | We present a class of conformally flat solutions of the Einstein's field equations for spherical systems undergoing gravitational collapse accompanied with radial heat flux. The interior space-time of the collapsing matter is chosen to be conformal to the Robertson-Walker space-time so that its Weyl tensor vanishes ide... |
gr-qc/9804059 | Joan Masso | Joan Masso, Edward Seidel, Wai-Mo Suen and Paul Walker | Event Horizons in Numerical Relativity II: Analyzing the Horizon | 23 double column pages including 28 figures. Higher quality figures
(big size!) available upon request (jmasso OR pwalker@aei-potsdam.mpg.de) | Phys.Rev. D59 (1999) 064015 | 10.1103/PhysRevD.59.064015 | null | gr-qc | null | We present techniques and methods for analyzing the dynamics of event
horizons in numerically constructed spacetimes. There are three classes of
analytical tools we have investigated. The first class consists of proper
geometrical measures of the horizon which allow us comparison with perturbation
theory and powerful... | [
{
"created": "Thu, 23 Apr 1998 07:06:41 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Masso",
"Joan",
""
],
[
"Seidel",
"Edward",
""
],
[
"Suen",
"Wai-Mo",
""
],
[
"Walker",
"Paul",
""
]
] | We present techniques and methods for analyzing the dynamics of event horizons in numerically constructed spacetimes. There are three classes of analytical tools we have investigated. The first class consists of proper geometrical measures of the horizon which allow us comparison with perturbation theory and powerful g... |
2211.16825 | Jin Qiao | Jin Qiao, Zhao Li, Tao Zhu, Ran Ji, Guoliang Li, and Wen Zhao | Testing parity symmetry of gravity with gravitational waves | 22 pages, no figures | Front. Astron. Space Sci. 9, 1109086 (2023) | 10.3389/fspas.2022.1109086 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The examination of parity symmetry in gravitational interactions has drawn
increasing attention. Although Einstein's General Relativity is
parity-conserved, numerous theories of parity-violating (PV) gravity in
different frameworks have recently been proposed for different motivations. In
this review, we briefly summ... | [
{
"created": "Wed, 30 Nov 2022 08:49:25 GMT",
"version": "v1"
},
{
"created": "Thu, 29 Dec 2022 13:42:03 GMT",
"version": "v2"
}
] | 2023-02-15 | [
[
"Qiao",
"Jin",
""
],
[
"Li",
"Zhao",
""
],
[
"Zhu",
"Tao",
""
],
[
"Ji",
"Ran",
""
],
[
"Li",
"Guoliang",
""
],
[
"Zhao",
"Wen",
""
]
] | The examination of parity symmetry in gravitational interactions has drawn increasing attention. Although Einstein's General Relativity is parity-conserved, numerous theories of parity-violating (PV) gravity in different frameworks have recently been proposed for different motivations. In this review, we briefly summar... |
1702.06036 | Laura Castell\'o Gomar | Laura Castell\'o Gomar, Daniel Mart\'in de Blas, Guillermo A. Mena
Marug\'an, and Javier Olmedo | Hybrid loop quantum cosmology and predictions for the cosmic microwave
background | 34 pages, 23 figures, 1 table; v2: revised and minor improvements
included | Phys. Rev. D 96, 103528 (2017) | 10.1103/PhysRevD.96.103528 | IGC-17|2-1 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the consequences of the hybrid quantization approach for
primordial perturbations in loop quantum cosmology, obtaining predictions for
the cosmic microwave background and comparing them with data collected by the
Planck mission. In this work, we complete previous studies about the scalar
perturbations ... | [
{
"created": "Mon, 20 Feb 2017 16:01:19 GMT",
"version": "v1"
},
{
"created": "Tue, 30 May 2017 10:00:23 GMT",
"version": "v2"
}
] | 2017-11-29 | [
[
"Gomar",
"Laura Castelló",
""
],
[
"de Blas",
"Daniel Martín",
""
],
[
"Marugán",
"Guillermo A. Mena",
""
],
[
"Olmedo",
"Javier",
""
]
] | We investigate the consequences of the hybrid quantization approach for primordial perturbations in loop quantum cosmology, obtaining predictions for the cosmic microwave background and comparing them with data collected by the Planck mission. In this work, we complete previous studies about the scalar perturbations an... |
gr-qc/0301032 | Maurizio Gasperini | M. Gasperini | Phenomenology of the relic dilaton background | 6 pages, latex, IOP style ecssm.sty included, to appear in Proc. of
the 15th SIGRAV Conference on General Relativity and Gravitational Physics | null | null | BA-TH/02-454 | gr-qc hep-th | null | We discuss the expected amplitude of a cosmic background of massive,
non-relativistic dilatons, and we report recent results about its possible
detection. This paper is a contracted version of a talk given at the 15th
SIGRAV Conference on "General Relativity and Gravitational Physics" (Villa
Mondragone, Roma, Septemb... | [
{
"created": "Thu, 9 Jan 2003 18:38:09 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Gasperini",
"M.",
""
]
] | We discuss the expected amplitude of a cosmic background of massive, non-relativistic dilatons, and we report recent results about its possible detection. This paper is a contracted version of a talk given at the 15th SIGRAV Conference on "General Relativity and Gravitational Physics" (Villa Mondragone, Roma, September... |
gr-qc/9404057 | Renaud Parentani | S. Massar and R. Parentani | From Vacuum Fluctuations to Radiation: Accelerated Detectors and Black
Holes | definitive version, 39 pages and 5 figures available upon request
from S.M., ULB-TH 94/02 | null | null | null | gr-qc hep-th | null | The vacuum fluctuations that induce the transitions and the thermalisation of
a uniformly accelerated two level atom are studied in detail. Their energy
content is revealed through the weak measurement formalism of Aharonov et al.
It is shown that each time the detector makes a transition it radiates a
Minkowski phot... | [
{
"created": "Thu, 28 Apr 1994 07:08:05 GMT",
"version": "v1"
},
{
"created": "Fri, 3 Jun 1994 12:49:43 GMT",
"version": "v2"
}
] | 2009-09-25 | [
[
"Massar",
"S.",
""
],
[
"Parentani",
"R.",
""
]
] | The vacuum fluctuations that induce the transitions and the thermalisation of a uniformly accelerated two level atom are studied in detail. Their energy content is revealed through the weak measurement formalism of Aharonov et al. It is shown that each time the detector makes a transition it radiates a Minkowski photon... |
1810.06753 | Wei-Xiang Feng | Wei-Xiang Feng, Chao-Qiang Geng, Ling-Wei Luo | The Buchdahl Stability Bound in Eddington-inspired Born-Infeld Gravity | 13 pages, 2 figures, 1 table; references and a table added, typos
corrected, \kappa-energy condition defined; version published in Chinese
Physics C | Chin. Phys. C43, 083107 (2019) | 10.1088/1674-1137/43/8/083107 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We give the Buchdahl stability bound in Eddington-inspired Born-Infeld (EiBI)
gravity. We show that this bound depends on an energy condition controlled by
the model parameter $\kappa$. From this bound, we can constrain $\kappa\lesssim
10^{8}\text{m}^2$ if a neutron star with a mass around $3M_{\odot}$ is observed
in... | [
{
"created": "Mon, 15 Oct 2018 23:43:36 GMT",
"version": "v1"
},
{
"created": "Fri, 1 Mar 2019 03:46:37 GMT",
"version": "v2"
},
{
"created": "Thu, 6 Jun 2019 03:45:08 GMT",
"version": "v3"
},
{
"created": "Fri, 19 Jul 2019 03:05:18 GMT",
"version": "v4"
}
] | 2019-07-22 | [
[
"Feng",
"Wei-Xiang",
""
],
[
"Geng",
"Chao-Qiang",
""
],
[
"Luo",
"Ling-Wei",
""
]
] | We give the Buchdahl stability bound in Eddington-inspired Born-Infeld (EiBI) gravity. We show that this bound depends on an energy condition controlled by the model parameter $\kappa$. From this bound, we can constrain $\kappa\lesssim 10^{8}\text{m}^2$ if a neutron star with a mass around $3M_{\odot}$ is observed in t... |
gr-qc/0509017 | Mikhail V. Gorbatenko | Mikhail V. Gorbatenko | On the Possibility to Explain "The Pioneer Anomaly" within the Framework
of Conformal Geometrodynamics | 15 pages, LaTeX2e | null | null | null | gr-qc | null | Einstein-Infeld-Hoffmann method is used to solve the problem of motion of two
bodies when the equations of general relativity are of the generalized form:
they have been reduced to a form invariant under conformal transformations. It
is proved that not only metric degrees of freedom, but also derivatives of
vector $A... | [
{
"created": "Tue, 6 Sep 2005 15:52:09 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Gorbatenko",
"Mikhail V.",
""
]
] | Einstein-Infeld-Hoffmann method is used to solve the problem of motion of two bodies when the equations of general relativity are of the generalized form: they have been reduced to a form invariant under conformal transformations. It is proved that not only metric degrees of freedom, but also derivatives of vector $A_{... |
1007.4039 | Matt Visser | Jozef Skakala (Victoria University of Wellington) and Matt Visser
(Victoria University of Wellington) | Highly-damped quasi-normal frequencies for piecewise Eckart potentials | v1: 4 pages; letter-length summary of results reported in
considerably more detail in arXiv:1004.2539; v2: minor typos fixed in
equation (34); matches published version | Physical Review D81 (2010) 125023 | 10.1103/PhysRevD.81.125023 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Highly-damped quasi-normal frequencies are very often of the form omega_n =
(offset) + i n (gap). We investigate the genericity of this phenomenon by
considering a model potential that is piecewise Eckart (piecewise
Poeschl-Teller), and developing an analytic "quantization condition" for the
highly-damped quasi-norma... | [
{
"created": "Fri, 23 Jul 2010 03:58:40 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Sep 2010 06:18:24 GMT",
"version": "v2"
}
] | 2010-09-02 | [
[
"Skakala",
"Jozef",
"",
"Victoria University of Wellington"
],
[
"Visser",
"Matt",
"",
"Victoria University of Wellington"
]
] | Highly-damped quasi-normal frequencies are very often of the form omega_n = (offset) + i n (gap). We investigate the genericity of this phenomenon by considering a model potential that is piecewise Eckart (piecewise Poeschl-Teller), and developing an analytic "quantization condition" for the highly-damped quasi-normal ... |
1110.6244 | Sumati Surya | Sumati Surya | Evidence for a Phase Transition in 2D Causal Set Quantum Gravity | 14 pages, 13 figures | null | 10.1088/0264-9381/29/13/132001 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present evidence for a phase transition in a theory of 2D causal set
quantum gravity which contains a dimensionless non-locality parameter $\epsilon
\in (0,1]$. The transition is between a continuum phase and a crystalline
phase, characterised by a set of covariant observables. For a fixed size of the
causal set t... | [
{
"created": "Fri, 28 Oct 2011 04:28:47 GMT",
"version": "v1"
}
] | 2015-06-03 | [
[
"Surya",
"Sumati",
""
]
] | We present evidence for a phase transition in a theory of 2D causal set quantum gravity which contains a dimensionless non-locality parameter $\epsilon \in (0,1]$. The transition is between a continuum phase and a crystalline phase, characterised by a set of covariant observables. For a fixed size of the causal set the... |
1603.01569 | Henrique de Andrade Gomes | Henrique de A. Gomes | Local(ish) gravity theories in conformal superspace | 24 pages, 7 page appendix, 7 figures, Annals of Physics, June 2018 | null | 10.1016/j.aop.2018.05.014 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Motivated by well-known obstacles to quantum gravity, I look for the most
general geometrodynamical symmetries compatible with a reduced physical
configuration space for metric gravity. I argue that they lead either to a
completely static Universe, or one embodying spatial conformal diffeomorphisms.
Demanding localit... | [
{
"created": "Fri, 4 Mar 2016 18:57:57 GMT",
"version": "v1"
},
{
"created": "Wed, 16 Aug 2017 23:21:51 GMT",
"version": "v2"
},
{
"created": "Sat, 4 Aug 2018 14:03:23 GMT",
"version": "v3"
}
] | 2018-08-07 | [
[
"Gomes",
"Henrique de A.",
""
]
] | Motivated by well-known obstacles to quantum gravity, I look for the most general geometrodynamical symmetries compatible with a reduced physical configuration space for metric gravity. I argue that they lead either to a completely static Universe, or one embodying spatial conformal diffeomorphisms. Demanding locality ... |
gr-qc/0410124 | Ruth Lazkoz | L. Fern\'andez-Jambrina and Ruth Lazkoz | Geodesic behavior of sudden future singularities | 3 pages, revtex, twocolumn | Phys.Rev. D70 (2004) 121503 | 10.1103/PhysRevD.70.121503 | null | gr-qc | null | In this paper we analyze the effect of recently proposed classes of sudden
future singularities on causal geodesics of FLRW spacetimes. Geodesics are
shown to be extendible and just the equations for geodesic deviation are
singular, although tidal forces are not strong enough to produce a Big Rip. For
the sake of com... | [
{
"created": "Tue, 26 Oct 2004 16:32:39 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Jan 2005 11:43:32 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Fernández-Jambrina",
"L.",
""
],
[
"Lazkoz",
"Ruth",
""
]
] | In this paper we analyze the effect of recently proposed classes of sudden future singularities on causal geodesics of FLRW spacetimes. Geodesics are shown to be extendible and just the equations for geodesic deviation are singular, although tidal forces are not strong enough to produce a Big Rip. For the sake of compl... |
1910.10856 | Nikolaos Stergioulas | Stamatis Vretinaris, Nikolaos Stergioulas and Andreas Bauswein | Empirical relations for gravitational-wave asteroseismology of binary
neutron star mergers | 26 pages, 16 figures | Phys. Rev. D 101, 084039 (2020) | 10.1103/PhysRevD.101.084039 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct new, multivariate empirical relations for measuring neutron star
radii and tidal deformabilities from the dominant gravitational wave frequency
in the post-merger phase of binary neutron star mergers. The relations
determine neutron star radii and tidal deformabilities for specific neutron
star masses wi... | [
{
"created": "Thu, 24 Oct 2019 00:32:54 GMT",
"version": "v1"
}
] | 2020-04-29 | [
[
"Vretinaris",
"Stamatis",
""
],
[
"Stergioulas",
"Nikolaos",
""
],
[
"Bauswein",
"Andreas",
""
]
] | We construct new, multivariate empirical relations for measuring neutron star radii and tidal deformabilities from the dominant gravitational wave frequency in the post-merger phase of binary neutron star mergers. The relations determine neutron star radii and tidal deformabilities for specific neutron star masses with... |
gr-qc/0312086 | Daniel Grumiller | H. Balasin and D. Grumiller | The ultrarelativistic limit of 2D dilaton gravity and its energy
momentum tensor | 20 pages, 3 eps-figures, v4: corrected typo in affiliation and 2
misprints in the text, added PACS numbers | Class.Quant.Grav. 21 (2004) 2859-2872 | 10.1088/0264-9381/21/12/006 | TUW-03-26, ESI 1423 | gr-qc hep-th | null | The ultrarelativistic limit of twodimensional dilaton gravity is presented
and its associated (anti-)selfdual energy momentum tensor is derived. It is
localized on a null line, although the line element remains twice
differentiable. Relations to the Aichelburg-Sexl spacetime and constant dilaton
vacua are pointed out... | [
{
"created": "Thu, 18 Dec 2003 16:16:13 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Dec 2003 14:59:50 GMT",
"version": "v2"
},
{
"created": "Fri, 2 Apr 2004 17:24:30 GMT",
"version": "v3"
},
{
"created": "Mon, 19 Apr 2004 13:40:00 GMT",
"version": "v4"
}
] | 2009-11-10 | [
[
"Balasin",
"H.",
""
],
[
"Grumiller",
"D.",
""
]
] | The ultrarelativistic limit of twodimensional dilaton gravity is presented and its associated (anti-)selfdual energy momentum tensor is derived. It is localized on a null line, although the line element remains twice differentiable. Relations to the Aichelburg-Sexl spacetime and constant dilaton vacua are pointed out. ... |
1312.6683 | Oleksii Iegurnov | M.P. Korkina, O.O. Iegurnov | Matching of Stephani and de Sitter solutions on the hypersurface of
constant time | Accepted for publication in Visnyk Dnipropetrovskogo universytetu.
Fizyka. Radioelectronika. No2. Issue 20. V.21, 2013, 12 pages | Visnyk Dnipropetrovskogo universytetu. Fizyka. Radioelectronika.
No2. Issue 20. V.21, 2013 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The spherically symmetric solution for perfect fluid with homogeneous density
and inhomogeneous pressure has been considered. This solution is known as
Stephani solution. The matching of this solution and de Sitter solution has
been done on a hypersurface of constant time. The matching has been done for
general case ... | [
{
"created": "Sat, 21 Dec 2013 14:42:35 GMT",
"version": "v1"
}
] | 2013-12-25 | [
[
"Korkina",
"M. P.",
""
],
[
"Iegurnov",
"O. O.",
""
]
] | The spherically symmetric solution for perfect fluid with homogeneous density and inhomogeneous pressure has been considered. This solution is known as Stephani solution. The matching of this solution and de Sitter solution has been done on a hypersurface of constant time. The matching has been done for general case an... |
0907.4736 | Vladimir Kassandrov | Vladimir V. Kassandrov | On Hierarchy and Equivalence of Relativistic Equations for Massive
Fields | 7 pages, twocolumn. Problem of construction the hierarchy of
solutions in the massive case reformulated | Grav.Cosmol.14:53-59,2008 | 10.1134/S0202289308010076 | null | gr-qc hep-th math-ph math.MP quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A non-canonical correspondence of the complete sets of solutions to the Dirac
and Klein-Gordon free equations in Minkowski space-time is established. This
allows for a novel viewpoint on the relationship of relativistic equations for
different spins and on the origin of spinor transformations. In particular,
starting... | [
{
"created": "Mon, 27 Jul 2009 19:07:47 GMT",
"version": "v1"
},
{
"created": "Mon, 3 Aug 2009 23:09:23 GMT",
"version": "v2"
}
] | 2010-11-23 | [
[
"Kassandrov",
"Vladimir V.",
""
]
] | A non-canonical correspondence of the complete sets of solutions to the Dirac and Klein-Gordon free equations in Minkowski space-time is established. This allows for a novel viewpoint on the relationship of relativistic equations for different spins and on the origin of spinor transformations. In particular, starting f... |
gr-qc/0408101 | Marc Henneaux | Marc Henneaux and Claudio Teitelboim | Duality in linearized gravity | 10 pages; introduction rewritten and references added | Phys.Rev. D71 (2005) 024018 | 10.1103/PhysRevD.71.024018 | null | gr-qc hep-th | null | We show that duality transformations of linearized gravity in four
dimensions, i.e., rotations of the linearized Riemann tensor and its dual into
each other, can be extended to the dynamical fields of the theory so as to be
symmetries of the action and not just symmetries of the equations of motion.
Our approach reli... | [
{
"created": "Tue, 31 Aug 2004 13:39:24 GMT",
"version": "v1"
},
{
"created": "Thu, 6 Jan 2005 07:34:40 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Henneaux",
"Marc",
""
],
[
"Teitelboim",
"Claudio",
""
]
] | We show that duality transformations of linearized gravity in four dimensions, i.e., rotations of the linearized Riemann tensor and its dual into each other, can be extended to the dynamical fields of the theory so as to be symmetries of the action and not just symmetries of the equations of motion. Our approach relies... |
gr-qc/9602043 | Steven Corley | S. Corley and T. Jacobson | Focusing and the Holographic Hypothesis | 8 pages, plain latex, 5 figures included using psfig | Phys.Rev.D53:6720-6724,1996 | 10.1103/PhysRevD.53.R6720 | THU-96/11 | gr-qc hep-th | null | The ``screen mapping" introduced by Susskind to implement 't Hooft's
holographic hypothesis is studied. For a single screen time, there are an
infinite number of images of a black hole event horizon, almost all of which
have smaller area on the screen than the horizon area. This is consistent with
the focusing equati... | [
{
"created": "Thu, 22 Feb 1996 17:18:43 GMT",
"version": "v1"
}
] | 2009-12-30 | [
[
"Corley",
"S.",
""
],
[
"Jacobson",
"T.",
""
]
] | The ``screen mapping" introduced by Susskind to implement 't Hooft's holographic hypothesis is studied. For a single screen time, there are an infinite number of images of a black hole event horizon, almost all of which have smaller area on the screen than the horizon area. This is consistent with the focusing equation... |
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