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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
gr-qc/9903066 | Giovanni Amelino-Camelia | Giovanni Amelino-Camelia, Jerzy Lukierski, Anatol Nowicki | Distance Measurement and $\kappa$-Deformed Propagation of Light and
Heavy Probes | 13 pages, Latex, to appear in Int. J. Mod. Phys. A | Int.J.Mod.Phys. A14 (1999) 4575-4588 | 10.1142/S0217751X99002141 | NEIP-99-004 | gr-qc | null | We investigate the implications for the measurability of distances of a
covariant dimensionful ``$\kappa$'' deformation of D=4 relativistic symmetries,
with quantum time coordinate and modified Heisenberg algebra. We show that the
structure of the deformed mass-shell condition has significant implications for
measure... | [
{
"created": "Wed, 17 Mar 1999 17:32:06 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Amelino-Camelia",
"Giovanni",
""
],
[
"Lukierski",
"Jerzy",
""
],
[
"Nowicki",
"Anatol",
""
]
] | We investigate the implications for the measurability of distances of a covariant dimensionful ``$\kappa$'' deformation of D=4 relativistic symmetries, with quantum time coordinate and modified Heisenberg algebra. We show that the structure of the deformed mass-shell condition has significant implications for measureme... |
gr-qc/0209067 | Jaime Villas da Rocha | R. Chan, M. F. A. da Silva, Jaime F. Villas da Rocha | Gravitational Collapse of Self-Similar and Shear-free Fluid with Heat
Flow | 34 pages, 9 figures, latex | Int.J.Mod.Phys. D12 (2003) 347-368 | 10.1142/S021827180300327X | null | gr-qc | null | A class of solutions to Einstein field equations is studied, which represents
gravitational collapse of thick spherical shells made of self-similar and
shear-free fluid with heat flow. It is shown that such shells satisfy all the
energy conditions, and the corresponding collapse always forms naked
singularities.
| [
{
"created": "Thu, 19 Sep 2002 20:22:14 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Chan",
"R.",
""
],
[
"da Silva",
"M. F. A.",
""
],
[
"da Rocha",
"Jaime F. Villas",
""
]
] | A class of solutions to Einstein field equations is studied, which represents gravitational collapse of thick spherical shells made of self-similar and shear-free fluid with heat flow. It is shown that such shells satisfy all the energy conditions, and the corresponding collapse always forms naked singularities. |
1509.08867 | Yann Bouffanais | Yann Bouffanais and Edward K. Porter | Detecting compact galactic binaries using a hybrid swarm-based algorithm | 19 pages, 5 figures | Phys. Rev. D 93, 064020 (2016) | 10.1103/PhysRevD.93.064020 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Compact binaries in our galaxy are expected to be one of the main sources of
gravitational waves for the future eLISA mission. During the mission lifetime,
many thousands of galactic binaries should be individually resolved. However,
the identification of the sources, and the extraction of the signal parameters
in a ... | [
{
"created": "Tue, 29 Sep 2015 17:50:20 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Mar 2016 23:17:42 GMT",
"version": "v2"
}
] | 2016-03-23 | [
[
"Bouffanais",
"Yann",
""
],
[
"Porter",
"Edward K.",
""
]
] | Compact binaries in our galaxy are expected to be one of the main sources of gravitational waves for the future eLISA mission. During the mission lifetime, many thousands of galactic binaries should be individually resolved. However, the identification of the sources, and the extraction of the signal parameters in a no... |
2007.11066 | Alireza Talebian Ashkezari | Alireza Talebian, Amin Nassiri-Rad, Hassan Firouzjahi | Revisiting Magnetogenesis during Inflation | null | Phys. Rev. D 102, 103508 (2020) | 10.1103/PhysRevD.102.103508 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We revisit the mechanism of primordial magnetogenesis during inflation by
taking into account the dynamics of the stochastic noises of the
electromagnetic perturbations. We obtain the associated Langevin and
Fokker-Planck equations for the electromagnetic fields and solve them
analytically. It is shown that while the... | [
{
"created": "Tue, 21 Jul 2020 19:49:41 GMT",
"version": "v1"
}
] | 2020-11-18 | [
[
"Talebian",
"Alireza",
""
],
[
"Nassiri-Rad",
"Amin",
""
],
[
"Firouzjahi",
"Hassan",
""
]
] | We revisit the mechanism of primordial magnetogenesis during inflation by taking into account the dynamics of the stochastic noises of the electromagnetic perturbations. We obtain the associated Langevin and Fokker-Planck equations for the electromagnetic fields and solve them analytically. It is shown that while the b... |
1509.00234 | Mustapha Azreg-A\"inou | Mustapha Azreg-A\"inou | Wormhole solutions sourced by fluids, II: Three-fluid two-charged
sources | 14 pages, no figures. New title. To appear in the European Physical
Journal C | Eur. Phys. J. C (2016) 76:7 | 10.1140/epjc/s10052-015-3836-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Lack of a consistent metric for generating rotating wormholes motivates us to
present a new one endowed with interesting physical and geometrical properties.
When combined with the generalized method of superposition of fields, which
consists in attaching a form of matter to each moving frame, it generates
massive an... | [
{
"created": "Tue, 1 Sep 2015 11:28:55 GMT",
"version": "v1"
},
{
"created": "Fri, 11 Dec 2015 08:46:05 GMT",
"version": "v2"
}
] | 2016-01-07 | [
[
"Azreg-Aïnou",
"Mustapha",
""
]
] | Lack of a consistent metric for generating rotating wormholes motivates us to present a new one endowed with interesting physical and geometrical properties. When combined with the generalized method of superposition of fields, which consists in attaching a form of matter to each moving frame, it generates massive and ... |
1001.0084 | Nandinii Barbosa-Cendejas | N. Barbosa-Cendejas and M.A. Reyes | The Schrodinger picture of standard cosmology | 9 pages, 1 figure | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a time independent Schrodinger type equation derived from the
equations of motion that drives a single scalar field in a standard cosmology
model for inflation in a flat space-time with a Friedman-Robertson-Walker (FRW)
metric with a cosmological constant. We find that all the 1-dimensional bound
state so... | [
{
"created": "Thu, 31 Dec 2009 04:18:23 GMT",
"version": "v1"
}
] | 2010-01-05 | [
[
"Barbosa-Cendejas",
"N.",
""
],
[
"Reyes",
"M. A.",
""
]
] | We consider a time independent Schrodinger type equation derived from the equations of motion that drives a single scalar field in a standard cosmology model for inflation in a flat space-time with a Friedman-Robertson-Walker (FRW) metric with a cosmological constant. We find that all the 1-dimensional bound state solu... |
1409.0474 | Furkan Semih D\"undar | Furkan Semih D\"undar | The Firewall Paradox | MSc. thesis submitted to ODTU. Table of contents entries referring to
subsections of the index are added (The only addition to the library
version). v2: more comprehensive, visually attractive v3: Published as a book
by LAP LAMBERT Academic Publishing (December 20, 2016) | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this MSc. thesis, we have attempted to give an overview of the firewall
paradox and various approaches towards its resolution. After an introductory
chapter on some basic concepts in quantum field theory in curved spacetimes
such as Hawking radiation, we introduce the paradox. It arises out of
application of princ... | [
{
"created": "Wed, 27 Aug 2014 12:07:00 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Nov 2014 20:52:42 GMT",
"version": "v2"
},
{
"created": "Thu, 2 Feb 2017 22:54:55 GMT",
"version": "v3"
}
] | 2017-02-06 | [
[
"Dündar",
"Furkan Semih",
""
]
] | In this MSc. thesis, we have attempted to give an overview of the firewall paradox and various approaches towards its resolution. After an introductory chapter on some basic concepts in quantum field theory in curved spacetimes such as Hawking radiation, we introduce the paradox. It arises out of application of princip... |
1407.2528 | Gergely Sz\'ekely | H. Andr\'eka and J. X. Madar\'asz and I. N\'emeti and M. Stannett and
G. Sz\'ekely | Faster than light motion does not imply time travel | 11 pages, 5 figures | 2014 Class. Quantum Grav. 31 095005 | 10.1088/0264-9381/31/9/095005 | null | gr-qc math-ph math.LO math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Seeing the many examples in the literature of causality violations based on
faster-than- light (FTL) signals one naturally thinks that FTL motion leads
inevitably to the possibility of time travel. We show that this logical
inference is invalid by demonstrating a model, based on (3+1)-dimensional
Minkowski spacetime,... | [
{
"created": "Wed, 9 Jul 2014 15:41:47 GMT",
"version": "v1"
}
] | 2014-07-10 | [
[
"Andréka",
"H.",
""
],
[
"Madarász",
"J. X.",
""
],
[
"Németi",
"I.",
""
],
[
"Stannett",
"M.",
""
],
[
"Székely",
"G.",
""
]
] | Seeing the many examples in the literature of causality violations based on faster-than- light (FTL) signals one naturally thinks that FTL motion leads inevitably to the possibility of time travel. We show that this logical inference is invalid by demonstrating a model, based on (3+1)-dimensional Minkowski spacetime, i... |
0804.4144 | Emma Robinson | E. L. Robinson, J. D. Romano, A. Vecchio | Search for a stochastic gravitational-wave signal in the second round of
the Mock LISA Data Challenges | 10 pages, 3 figures, GWDAW12 conference proceedings | Class.Quant.Grav.25:184019,2008 | 10.1088/0264-9381/25/18/184019 | null | gr-qc astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The analysis method currently proposed to search for isotropic stochastic
radiation of primordial or astrophysical origin with the Laser Interferometer
Space Antenna (LISA) relies on the combined use of two LISA channels, one of
which is insensitive to gravitational waves, such as the symmetrised Sagnac.
For this met... | [
{
"created": "Fri, 25 Apr 2008 16:41:40 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Robinson",
"E. L.",
""
],
[
"Romano",
"J. D.",
""
],
[
"Vecchio",
"A.",
""
]
] | The analysis method currently proposed to search for isotropic stochastic radiation of primordial or astrophysical origin with the Laser Interferometer Space Antenna (LISA) relies on the combined use of two LISA channels, one of which is insensitive to gravitational waves, such as the symmetrised Sagnac. For this metho... |
1604.01132 | Elizabeth Winstanley | Supakchai Ponglertsakul, Elizabeth Winstanley and Sam R. Dolan | Stability of gravitating charged-scalar solitons in a cavity | 17 pages, 13 figures, minor changes, accepted for publication in
Physical Review D | Phys. Rev. D 94, 024031 (2016) | 10.1103/PhysRevD.94.024031 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present new regular solutions of Einstein-charged scalar field theory in a
cavity. The system is enclosed inside a reflecting mirror-like boundary, on
which the scalar field vanishes. The mirror is placed at the zero of the scalar
field closest to the origin, and inside this boundary our solutions are
regular. We ... | [
{
"created": "Tue, 5 Apr 2016 04:29:08 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Jul 2016 12:47:14 GMT",
"version": "v2"
}
] | 2016-07-18 | [
[
"Ponglertsakul",
"Supakchai",
""
],
[
"Winstanley",
"Elizabeth",
""
],
[
"Dolan",
"Sam R.",
""
]
] | We present new regular solutions of Einstein-charged scalar field theory in a cavity. The system is enclosed inside a reflecting mirror-like boundary, on which the scalar field vanishes. The mirror is placed at the zero of the scalar field closest to the origin, and inside this boundary our solutions are regular. We st... |
1106.0414 | Luca Fabbri | Stefano Vignolo, Luca Fabbri and Roberto Cianci | Dirac spinors in Bianchi-I f(R)-cosmology with torsion | 25 pages, 1 figure | J. Math. Phys. 52, 112502 (2011) | 10.1063/1.3658865 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study Dirac spinors in Bianchi type-I cosmological models, within the
framework of torsional $f(R)$-gravity. We find four types of results: the
resulting dynamic behavior of the universe depends on the particular choice of
function $f(R)$; some $f(R)$ models do not isotropize and have no Einstein
limit, so that th... | [
{
"created": "Thu, 2 Jun 2011 12:31:05 GMT",
"version": "v1"
},
{
"created": "Thu, 1 Sep 2011 14:06:58 GMT",
"version": "v2"
},
{
"created": "Fri, 11 Nov 2011 19:05:58 GMT",
"version": "v3"
}
] | 2011-11-14 | [
[
"Vignolo",
"Stefano",
""
],
[
"Fabbri",
"Luca",
""
],
[
"Cianci",
"Roberto",
""
]
] | We study Dirac spinors in Bianchi type-I cosmological models, within the framework of torsional $f(R)$-gravity. We find four types of results: the resulting dynamic behavior of the universe depends on the particular choice of function $f(R)$; some $f(R)$ models do not isotropize and have no Einstein limit, so that they... |
gr-qc/0606031 | J\"org Hennig | J\"org Hennig, Gernot Neugebauer | Collisions of rigidly rotating disks of dust in General Relativity | 30 pages, 9 figures | Phys.Rev. D74 (2006) 064025 | 10.1103/PhysRevD.74.064025 | null | gr-qc | null | We discuss inelastic collisions of two rotating disks by using the
conservation laws for baryonic mass and angular momentum. In particular, we
formulate conditions for the formation of a new disk after the collision and
calculate the total energy loss to obtain upper limits for the emitted
gravitational energy.
| [
{
"created": "Wed, 7 Jun 2006 14:44:07 GMT",
"version": "v1"
},
{
"created": "Mon, 11 Sep 2006 11:09:21 GMT",
"version": "v2"
},
{
"created": "Mon, 25 Sep 2006 08:57:30 GMT",
"version": "v3"
}
] | 2009-11-11 | [
[
"Hennig",
"Jörg",
""
],
[
"Neugebauer",
"Gernot",
""
]
] | We discuss inelastic collisions of two rotating disks by using the conservation laws for baryonic mass and angular momentum. In particular, we formulate conditions for the formation of a new disk after the collision and calculate the total energy loss to obtain upper limits for the emitted gravitational energy. |
2312.06631 | Digvijay Wadekar | Digvijay Wadekar, Javier Roulet, Tejaswi Venumadhav, Ajit Kumar Mehta,
Barak Zackay, Jonathan Mushkin, Seth Olsen, Matias Zaldarriaga | New black hole mergers in the LIGO-Virgo O3 data from a gravitational
wave search including higher-order harmonics | 15+7 pages, 6+5 figures. Our event catalog (including sub-threshold
events) and the samples from our PE runs are available at
https://github.com/JayWadekar/GW_higher_harmonics_search | null | null | null | gr-qc astro-ph.CO astro-ph.HE astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Nearly all of the previous gravitational wave (GW) searches in the LIGO-Virgo
data included GW waveforms with only the dominant quadrupole mode, i.e.,
omitting higher-order harmonics which are predicted by general relativity.
Based on the techniques developed in Wadekar et al. [1,2], we improve the IAS
pipeline by ($... | [
{
"created": "Mon, 11 Dec 2023 18:50:10 GMT",
"version": "v1"
}
] | 2023-12-12 | [
[
"Wadekar",
"Digvijay",
""
],
[
"Roulet",
"Javier",
""
],
[
"Venumadhav",
"Tejaswi",
""
],
[
"Mehta",
"Ajit Kumar",
""
],
[
"Zackay",
"Barak",
""
],
[
"Mushkin",
"Jonathan",
""
],
[
"Olsen",
"Seth",
""
],
... | Nearly all of the previous gravitational wave (GW) searches in the LIGO-Virgo data included GW waveforms with only the dominant quadrupole mode, i.e., omitting higher-order harmonics which are predicted by general relativity. Based on the techniques developed in Wadekar et al. [1,2], we improve the IAS pipeline by ($i$... |
2403.03399 | Christopher Reyes | Christopher Reyes, Jeremy Sakstein | Parameterized Post-Tolman-Oppenheimer-Volkoff Framework for Screened
Modified Gravity with an Application to the Secondary Component of GW190814 | 5 pages, 2 figures | null | null | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The secondary component of GW190814 has mass in the range $2.5$--$2.67{\rm
M}_\odot$, placing it within the lower mass gap separating neutron stars from
black holes. According to the predictions of general relativity and
state-of-the-art nuclear equations of state, this object is too heavy to be a
neutron star.~In th... | [
{
"created": "Wed, 6 Mar 2024 01:46:25 GMT",
"version": "v1"
}
] | 2024-03-07 | [
[
"Reyes",
"Christopher",
""
],
[
"Sakstein",
"Jeremy",
""
]
] | The secondary component of GW190814 has mass in the range $2.5$--$2.67{\rm M}_\odot$, placing it within the lower mass gap separating neutron stars from black holes. According to the predictions of general relativity and state-of-the-art nuclear equations of state, this object is too heavy to be a neutron star.~In this... |
1905.10066 | Jose Luis Hernandez-Pastora | Jos\'e Luis Hern\'andez-Pastora | A quadrupolar generalization of the Erez-Rosen coordinates | Accepted to be published in Classical and Quantum Gravity, May 2019 | null | 10.1088/1361-6382/ab2410 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The MSA system of coordinates [1] for the M Q-solution [2] is proved to be
the unique solution of certain partial differential equation with boundary and
asymptotic conditions. Such a differential equation is derived from the
orthogonality condition between two surfaces which hold a functional
relationship. The obtai... | [
{
"created": "Fri, 24 May 2019 07:21:56 GMT",
"version": "v1"
}
] | 2019-05-27 | [
[
"Hernández-Pastora",
"José Luis",
""
]
] | The MSA system of coordinates [1] for the M Q-solution [2] is proved to be the unique solution of certain partial differential equation with boundary and asymptotic conditions. Such a differential equation is derived from the orthogonality condition between two surfaces which hold a functional relationship. The obtaine... |
gr-qc/0001030 | Pia Astone | P.Astone, S.D'Antonio and G. Pizzella | Time Dispersion and Efficiency of Detection for Signals in Gravitational
Wave Experiments | 12 pages, 6 figures, Latex files using cernlik.cls (included). This
paper and related work are also available at
http://grwav3.roma1.infn.it/pia/papersweb.html Version 2: text unchanged.
Only a correction in the URL address | Phys.Rev.D62:042001,2000 | 10.1103/PhysRevD.62.042001 | null | gr-qc | null | Using simulated signals and measured noise with the EXPLORER and NAUTILUS
detectors we find the efficiency of signal detection and the signal arrival
time dispersion versus the signal-to-noise ratio.
| [
{
"created": "Tue, 11 Jan 2000 13:08:42 GMT",
"version": "v1"
},
{
"created": "Wed, 12 Jan 2000 14:40:29 GMT",
"version": "v2"
}
] | 2011-08-17 | [
[
"Astone",
"P.",
""
],
[
"D'Antonio",
"S.",
""
],
[
"Pizzella",
"G.",
""
]
] | Using simulated signals and measured noise with the EXPLORER and NAUTILUS detectors we find the efficiency of signal detection and the signal arrival time dispersion versus the signal-to-noise ratio. |
0912.4709 | J. -F. Pascual-Sanchez | A. San Miguel, F. Vicente and J.-F. Pascual-Sanchez | Numerical treatment of the light propagation problem in the
post-Newtonian formalism | 7 pages, 1 fig., Talk given by JFPS in Sept, 10, 2009, to be
published in JPCS as Proceedings of Spanish Relativity Meeting-ERE 2009 | J.Phys.Conf.Ser.229:012059,2010 | 10.1088/1742-6596/229/1/012059 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The geometry of a light wavefront, evolving from a initial flat wavefront in
the 3-space associated with a post-Newtonian relativistic spacetime, is studied
numerically by means of the ray tracing method. For a discretization of the
bidimensional light wavefront, a surface fitting technique is used to determine
the c... | [
{
"created": "Wed, 23 Dec 2009 18:52:39 GMT",
"version": "v1"
}
] | 2014-11-20 | [
[
"Miguel",
"A. San",
""
],
[
"Vicente",
"F.",
""
],
[
"Pascual-Sanchez",
"J. -F.",
""
]
] | The geometry of a light wavefront, evolving from a initial flat wavefront in the 3-space associated with a post-Newtonian relativistic spacetime, is studied numerically by means of the ray tracing method. For a discretization of the bidimensional light wavefront, a surface fitting technique is used to determine the cur... |
gr-qc/0506114 | Pantelis Apostolopoulos | Pantelis S. Apostolopoulos | A geometric description of the intermediate behaviour for spatially
homogeneous models | Latex, 15 pages, no figures (uses iopart style/class files); added
one reference and minor corrections; (v3) improved and extended discussion;
minor corrections and several new references are added; to appear in Class.
Quantum Grav | Class.Quant.Grav. 22 (2005) 4425-4442 | 10.1088/0264-9381/22/21/002 | null | gr-qc | null | A new approach is suggested for the study of geometric symmetries in general
relativity, leading to an invariant characterization of the evolutionary
behaviour for a class of Spatially Homogeneous (SH) vacuum and orthogonal
$\gamma -$law perfect fluid models. Exploiting the 1+3 orthonormal frame
formalism, we express... | [
{
"created": "Thu, 23 Jun 2005 17:32:54 GMT",
"version": "v1"
},
{
"created": "Sun, 26 Jun 2005 15:18:39 GMT",
"version": "v2"
},
{
"created": "Tue, 13 Sep 2005 08:04:44 GMT",
"version": "v3"
}
] | 2009-11-11 | [
[
"Apostolopoulos",
"Pantelis S.",
""
]
] | A new approach is suggested for the study of geometric symmetries in general relativity, leading to an invariant characterization of the evolutionary behaviour for a class of Spatially Homogeneous (SH) vacuum and orthogonal $\gamma -$law perfect fluid models. Exploiting the 1+3 orthonormal frame formalism, we express t... |
1410.2464 | John W. Moffat | J. W. Moffat | Scalar and Vector Field Constraints, Deflection of Light and Lensing in
Modified Gravity (MOG) | 8 pages, 1 figure | null | null | null | gr-qc astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A conformal coupling of the metric in the Jordan frame to the energy-momentum
tensor, screens the scalar field gravitational coupling strength $G$ in
modified gravity (MOG). The scalar field acquires a mass which depends on the
local matter density: the scalar field particle is massive for the Sun and
earth, where th... | [
{
"created": "Mon, 6 Oct 2014 20:12:59 GMT",
"version": "v1"
}
] | 2014-10-14 | [
[
"Moffat",
"J. W.",
""
]
] | A conformal coupling of the metric in the Jordan frame to the energy-momentum tensor, screens the scalar field gravitational coupling strength $G$ in modified gravity (MOG). The scalar field acquires a mass which depends on the local matter density: the scalar field particle is massive for the Sun and earth, where the ... |
gr-qc/0210080 | Sigbjorn Hervik | Sigbjorn Hervik | Vacuum Plane Waves in 4+1 D and Exact solutions to Einstein's Equations
in 3+1 D | 16 pages, no figures | Class.Quant.Grav.20:4315-4327,2003 | 10.1088/0264-9381/20/19/312 | null | gr-qc astro-ph hep-th | null | In this paper we derive homogeneous vacuum plane-wave solutions to Einstein's
field equations in 4+1 dimensions. The solutions come in five different types
of which three generalise the vacuum plane-wave solutions in 3+1 dimensions to
the 4+1 dimensional case. By doing a Kaluza-Klein reduction we obtain solutions
to ... | [
{
"created": "Wed, 23 Oct 2002 17:59:33 GMT",
"version": "v1"
},
{
"created": "Mon, 2 Jun 2003 13:24:45 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Hervik",
"Sigbjorn",
""
]
] | In this paper we derive homogeneous vacuum plane-wave solutions to Einstein's field equations in 4+1 dimensions. The solutions come in five different types of which three generalise the vacuum plane-wave solutions in 3+1 dimensions to the 4+1 dimensional case. By doing a Kaluza-Klein reduction we obtain solutions to th... |
1312.3466 | Carles Bona | Milton Ruiz, Carlos Palenzuela and Carles Bona | Almost-Killing conserved currents: a general mass function | 21 pages, 3 figures | Phys. Rev. D 89 025011, 2014 | 10.1103/PhysRevD.89.025011 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A new class of conserved currents, describing non-gravitational
energy-momentum density, is presented. The proposed currents do not require the
existence of a (timelike) Killing vector, and are not restricted to spherically
symmetric spacetimes (or similar ones, in which the Kodama vector can be
defined). They are ba... | [
{
"created": "Thu, 12 Dec 2013 12:38:23 GMT",
"version": "v1"
}
] | 2015-06-18 | [
[
"Ruiz",
"Milton",
""
],
[
"Palenzuela",
"Carlos",
""
],
[
"Bona",
"Carles",
""
]
] | A new class of conserved currents, describing non-gravitational energy-momentum density, is presented. The proposed currents do not require the existence of a (timelike) Killing vector, and are not restricted to spherically symmetric spacetimes (or similar ones, in which the Kodama vector can be defined). They are base... |
gr-qc/0509101 | Steve Drasco | Steve Drasco and Scott A. Hughes | Gravitational wave snapshots of generic extreme mass ratio inspirals | Minor changes in response to comments from readers, referees, and
editors. Final version, as it will appear in Physical Review D. Raw data and
a small program which will convert the data into waveforms lasting for
arbitrary lengths of time can be found at
http://gmunu.mit.edu/sdrasco/snapshots | Phys.Rev. D73 (2006) 024027 | 10.1103/PhysRevD.73.024027 | null | gr-qc astro-ph | null | Using black hole perturbation theory, we calculate the gravitational waves
produced by test particles moving on bound geodesic orbits about rotating black
holes. The orbits we consider are generic - simultaneously eccentric and
inclined. The waves can be described as having radial, polar, and azimuthal
"voices", each... | [
{
"created": "Mon, 26 Sep 2005 21:53:09 GMT",
"version": "v1"
},
{
"created": "Thu, 19 Jan 2006 23:19:18 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Drasco",
"Steve",
""
],
[
"Hughes",
"Scott A.",
""
]
] | Using black hole perturbation theory, we calculate the gravitational waves produced by test particles moving on bound geodesic orbits about rotating black holes. The orbits we consider are generic - simultaneously eccentric and inclined. The waves can be described as having radial, polar, and azimuthal "voices", each o... |
1001.1330 | Simone Mercuri | Simone Mercuri | Introduction to Loop Quantum Gravity | 91 pages, based on two invited lectures given at the 5th
International School on Field Theory and Gravitation, April 20-24, 2009
Cuiaba city, Brazil | PoS ISFTG:016, 2009 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The questions I have been asked during the 5th International School on Field
Theory and Gravitation, have compelled me to give an account of the premises
that I consider important for a beginner's approach to Loop Quantum Gravity.
After a description of some general arguments and an introduction to the
canonical theo... | [
{
"created": "Fri, 8 Jan 2010 18:27:26 GMT",
"version": "v1"
}
] | 2014-11-20 | [
[
"Mercuri",
"Simone",
""
]
] | The questions I have been asked during the 5th International School on Field Theory and Gravitation, have compelled me to give an account of the premises that I consider important for a beginner's approach to Loop Quantum Gravity. After a description of some general arguments and an introduction to the canonical theory... |
gr-qc/0209111 | Hisaaki Shinkai | Hisa-aki Shinkai and Gen Yoneda | Re-formulating the Einstein equations for stable numerical simulations:
Formulation Problem in Numerical Relativity | 50 pages, 18 figs, LaTeX. This is a review for a part of the book
"Progress in Astronomy and Astrophysics" (Nova Science Publ., 2003?). (Fig.2
is missing due to the file-size limitation). ver 2: added subtitle, revised
several comments, replaced Fig.8(b), and updated references | null | null | null | gr-qc astro-ph math-ph math.MP | null | We review recent efforts to re-formulate the Einstein equations for fully
relativistic numerical simulations. The so-called numerical relativity
(computational simulations in general relativity) is a promising research field
matching with ongoing astrophysical observations such as gravitational wave
astronomy. Many t... | [
{
"created": "Mon, 30 Sep 2002 00:42:45 GMT",
"version": "v1"
},
{
"created": "Mon, 2 Dec 2002 08:27:42 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Shinkai",
"Hisa-aki",
""
],
[
"Yoneda",
"Gen",
""
]
] | We review recent efforts to re-formulate the Einstein equations for fully relativistic numerical simulations. The so-called numerical relativity (computational simulations in general relativity) is a promising research field matching with ongoing astrophysical observations such as gravitational wave astronomy. Many tri... |
2209.10564 | Sebastian V\"olkel | Sebastian H. V\"olkel, Nicola Franchini, Enrico Barausse, Emanuele
Berti | Constraining modifications of black hole perturbation potentials near
the light ring with quasinormal modes | 12 pages, 7 figures | Phys.Rev.D 106 (2022) 12, 124036 | 10.1103/PhysRevD.106.124036 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In modified theories of gravity, the potentials appearing in the
Schr\"odinger-like equations that describe perturbations of non-rotating black
holes are also modified. In this paper we ask: can these modifications be
constrained with high-precision gravitational-wave measurements of the black
hole's quasinormal mode... | [
{
"created": "Wed, 21 Sep 2022 18:00:02 GMT",
"version": "v1"
},
{
"created": "Fri, 12 May 2023 15:36:40 GMT",
"version": "v2"
}
] | 2023-05-15 | [
[
"Völkel",
"Sebastian H.",
""
],
[
"Franchini",
"Nicola",
""
],
[
"Barausse",
"Enrico",
""
],
[
"Berti",
"Emanuele",
""
]
] | In modified theories of gravity, the potentials appearing in the Schr\"odinger-like equations that describe perturbations of non-rotating black holes are also modified. In this paper we ask: can these modifications be constrained with high-precision gravitational-wave measurements of the black hole's quasinormal mode f... |
gr-qc/9604058 | Esko Keski-Vakkuri | Esko Keski-Vakkuri (Caltech) and Samir D. Mathur (MIT) | Quantum Gravity and Turning Points in the Semiclassical Approximation | 32 pages, 3 Postscript figures, uses epsf.tex and fps.sty, some
discussion, references and Acknowledgements added, version to appear in Phys.
Rev. D | Phys.Rev.D54:7391-7406,1996 | 10.1103/PhysRevD.54.7391 | MIT-CTP-2529, CALT-68-2056 | gr-qc hep-th | null | The wavefunctional in quantum gravity gives an amplitude for 3-geometries and
matter fields. The four-space is usually recovered in a semiclassical
approximation where the gravity variables are taken to oscillate rapidly
compared to matter variables; this recovers the Schrodinger evolution for the
matter. We examine ... | [
{
"created": "Wed, 1 May 1996 00:19:02 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Aug 1996 05:35:18 GMT",
"version": "v2"
},
{
"created": "Fri, 16 Aug 1996 04:37:40 GMT",
"version": "v3"
}
] | 2011-09-09 | [
[
"Keski-Vakkuri",
"Esko",
"",
"Caltech"
],
[
"Mathur",
"Samir D.",
"",
"MIT"
]
] | The wavefunctional in quantum gravity gives an amplitude for 3-geometries and matter fields. The four-space is usually recovered in a semiclassical approximation where the gravity variables are taken to oscillate rapidly compared to matter variables; this recovers the Schrodinger evolution for the matter. We examine tu... |
gr-qc/9705027 | Keisuke Taniguchi | Keisuke Taniguchi and Masaru Shibata | Solving the Darwin problem in the first post-Newtonian approximation of
general relativity | 33 pages, revtex, 4 figures(eps), accepted for publication in Phys.
Rev. D | Phys.Rev. D56 (1997) 798-810 | 10.1103/PhysRevD.56.798 | KUNS 1425, OU-TAP 55 | gr-qc | null | We analytically calculate the equilibrium sequence of the corotating binary
stars of incompressible fluid in the first post-Newtonian(PN) approximation of
general relativity. By calculating the total energy and total angular momentum
of the system as a function of the orbital separation, we investigate the
innermost ... | [
{
"created": "Tue, 13 May 1997 10:12:40 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Taniguchi",
"Keisuke",
""
],
[
"Shibata",
"Masaru",
""
]
] | We analytically calculate the equilibrium sequence of the corotating binary stars of incompressible fluid in the first post-Newtonian(PN) approximation of general relativity. By calculating the total energy and total angular momentum of the system as a function of the orbital separation, we investigate the innermost st... |
2012.15331 | Luciano Petruzziello | Victor A. S. V. Bittencourt, Massimo Blasone, Fabrizio Illuminati,
Gaetano Lambiase, Giuseppe Gaetano Luciano, Luciano Petruzziello | Quantum nonlocality in extended theories of gravity | null | Phys. Rev. D 103, 044051 (2021) | 10.1103/PhysRevD.103.044051 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate how pure-state Einstein-Podolsky-Rosen correlations in the
internal degrees of freedom of massive particles are affected by a curved
spacetime background described by extended theories of gravity. We consider
models for which the corrections to the Einstein-Hilbert action are quadratic
in the curvature... | [
{
"created": "Wed, 30 Dec 2020 21:35:51 GMT",
"version": "v1"
}
] | 2021-03-03 | [
[
"Bittencourt",
"Victor A. S. V.",
""
],
[
"Blasone",
"Massimo",
""
],
[
"Illuminati",
"Fabrizio",
""
],
[
"Lambiase",
"Gaetano",
""
],
[
"Luciano",
"Giuseppe Gaetano",
""
],
[
"Petruzziello",
"Luciano",
""
]
] | We investigate how pure-state Einstein-Podolsky-Rosen correlations in the internal degrees of freedom of massive particles are affected by a curved spacetime background described by extended theories of gravity. We consider models for which the corrections to the Einstein-Hilbert action are quadratic in the curvature i... |
1108.0942 | Gideon Livshits | Joseph Katz and Gideon I. Livshits | Affine Gravity, Palatini Formalism and Charges | The work is dedicated to Joshua Goldberg from whom I learned and got
interested in conservation laws in General Relativity (J.K) | null | 10.1007/s10714-011-1265-8 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Affine gravity and the Palatini formalism contribute both to produce a simple
and unique formula for calculating charges at spatial and null infinity for
Lovelock type Lagrangians whose variational derivatives do not depend on
second-order derivatives of the field components. The method is based on the
covariant gene... | [
{
"created": "Wed, 3 Aug 2011 20:12:19 GMT",
"version": "v1"
}
] | 2015-05-30 | [
[
"Katz",
"Joseph",
""
],
[
"Livshits",
"Gideon I.",
""
]
] | Affine gravity and the Palatini formalism contribute both to produce a simple and unique formula for calculating charges at spatial and null infinity for Lovelock type Lagrangians whose variational derivatives do not depend on second-order derivatives of the field components. The method is based on the covariant genera... |
2402.03606 | Yun Soo Myung | Yun Soo Myung | Shadow bound of black holes with dark matter halo | 10 pages, 4 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the shadow cast of black holes immersed in a dark matter halo.
We use the M87* shadow data obtained by the EHT collaboration to constrain two
parameters ($M,a$) of dark matter halo surrounding a black hole with mass
$M_{\rm bh}$. For $a\ge10.8M$, we find the favored region (shadow bound), while
the dis... | [
{
"created": "Tue, 6 Feb 2024 00:46:54 GMT",
"version": "v1"
}
] | 2024-02-07 | [
[
"Myung",
"Yun Soo",
""
]
] | We investigate the shadow cast of black holes immersed in a dark matter halo. We use the M87* shadow data obtained by the EHT collaboration to constrain two parameters ($M,a$) of dark matter halo surrounding a black hole with mass $M_{\rm bh}$. For $a\ge10.8M$, we find the favored region (shadow bound), while the disfa... |
1905.09465 | T.G Zlosnik | Constantinos Skordis, Tom Zlosnik | A general class of gravitational theories as alternatives to dark matter
where the speed of gravity always equals the speed of light | null | null | 10.1103/PhysRevD.100.104013 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A number of theories of gravity have been proposed as proxies for dark matter
in the regime of galaxies and cosmology. The recent observations of
gravitational waves (GW170817) from the merger of two neutron stars, followed
by an electromagnetic counterpart (GW170817a) have placed stringent constraints
on the differe... | [
{
"created": "Thu, 23 May 2019 11:02:50 GMT",
"version": "v1"
}
] | 2022-08-17 | [
[
"Skordis",
"Constantinos",
""
],
[
"Zlosnik",
"Tom",
""
]
] | A number of theories of gravity have been proposed as proxies for dark matter in the regime of galaxies and cosmology. The recent observations of gravitational waves (GW170817) from the merger of two neutron stars, followed by an electromagnetic counterpart (GW170817a) have placed stringent constraints on the differenc... |
0803.0125 | Ioannis Kouletsis | Ioannis Kouletsis | Covariance and Time Regained in Canonical General Relativity | 41 pages, no figures | Phys.Rev.D78:064014,2008 | 10.1103/PhysRevD.78.064014 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Canonical vacuum gravity is expressed in generally-covariant form in order
that spacetime diffeomorphisms be represented within its equal-time phase
space. In accordance with the principle of general covariance, the time mapping
${\T}: {\yman} \to {\rman}$ and the space mapping ${\X}: {\yman} \to {\xman}$
that define... | [
{
"created": "Sun, 2 Mar 2008 14:09:39 GMT",
"version": "v1"
},
{
"created": "Sun, 9 Mar 2008 15:46:17 GMT",
"version": "v2"
}
] | 2009-02-20 | [
[
"Kouletsis",
"Ioannis",
""
]
] | Canonical vacuum gravity is expressed in generally-covariant form in order that spacetime diffeomorphisms be represented within its equal-time phase space. In accordance with the principle of general covariance, the time mapping ${\T}: {\yman} \to {\rman}$ and the space mapping ${\X}: {\yman} \to {\xman}$ that define t... |
1107.5002 | Wolfgang Wieland | Wolfgang M. Wieland | Twistorial phase space for complex Ashtekar variables | 18 pages, to appear in: Class. Quantum Grav | Class. Quantum Grav. 29 (2012) 045007 | 10.1088/0264-9381/29/4/045007 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We generalise the SU(2) spinor framework of twisted geometries developed by
Dupuis, Freidel, Livine, Speziale and Tambornino to the Lorentzian case, that
is the group SL(2,C). We show that the phase space for complex valued Ashtekar
variables on a spinnetwork graph can be decomposed in terms of twistorial
variables. ... | [
{
"created": "Mon, 25 Jul 2011 17:20:13 GMT",
"version": "v1"
},
{
"created": "Tue, 24 Jan 2012 10:58:27 GMT",
"version": "v2"
}
] | 2012-02-09 | [
[
"Wieland",
"Wolfgang M.",
""
]
] | We generalise the SU(2) spinor framework of twisted geometries developed by Dupuis, Freidel, Livine, Speziale and Tambornino to the Lorentzian case, that is the group SL(2,C). We show that the phase space for complex valued Ashtekar variables on a spinnetwork graph can be decomposed in terms of twistorial variables. To... |
1912.00685 | Shuang-Yong Zhou | Xue Sun and Shuang-Yong Zhou | Relativistic stars in mass-varying massive gravity | 9 pages, 9 figures; published in PRD | Phys. Rev. D 101, 044060 (2020) | 10.1103/PhysRevD.101.044060 | USTC-ICTS-19-29 | gr-qc astro-ph.CO astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Mass-varying massive gravity allows the graviton mass to vary according to
different environments. We investigate neutron star and white dwarf solutions
in this theory and find that the graviton mass can become very large near the
compact stars and settle down quickly to small cosmological values away the
stars, simi... | [
{
"created": "Mon, 2 Dec 2019 11:09:49 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Mar 2020 08:35:22 GMT",
"version": "v2"
}
] | 2020-03-31 | [
[
"Sun",
"Xue",
""
],
[
"Zhou",
"Shuang-Yong",
""
]
] | Mass-varying massive gravity allows the graviton mass to vary according to different environments. We investigate neutron star and white dwarf solutions in this theory and find that the graviton mass can become very large near the compact stars and settle down quickly to small cosmological values away the stars, simila... |
2402.03733 | Haximjan Abdusattar | Haximjan Abdusattar, Shi-Bei Kong | Cooling-Heating Properties of the FRW Universe in Gravity with a
Generalized Conformal Scalar Field | 9 pages, 4 figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, within the framework of modified gravity involving a conformal
scalar field, we investigate the Joule-Thomson expansion of the FRW universe to
identify cooling and heating regions. Notably, we observe that the
Joule-Thomson coefficient, denoted as $\mu$, diverges at $R_A=\sqrt{-2\alpha}$
when $\alpha<0... | [
{
"created": "Tue, 6 Feb 2024 05:59:40 GMT",
"version": "v1"
}
] | 2024-02-07 | [
[
"Abdusattar",
"Haximjan",
""
],
[
"Kong",
"Shi-Bei",
""
]
] | In this paper, within the framework of modified gravity involving a conformal scalar field, we investigate the Joule-Thomson expansion of the FRW universe to identify cooling and heating regions. Notably, we observe that the Joule-Thomson coefficient, denoted as $\mu$, diverges at $R_A=\sqrt{-2\alpha}$ when $\alpha<0$,... |
0708.3038 | Salvatore Capozziello | S. Capozziello, R. Cianci, C. Stornaiolo, S. Vignolo | f(R) Gravity with Torsion: The Metric-Affine Approach | 12 pages | Class.Quant.Grav.24:6417-6430,2007 | 10.1088/0264-9381/24/24/015 | null | gr-qc | null | The role of torsion in f(R) gravity is considered in the framework of
metric-affine formalism. We discuss the field equations in empty space and in
presence of perfect fluid matter taking into account the analogy with the
Palatini formalism. As a result, the extra curvature and torsion degrees of
freedom can be dealt... | [
{
"created": "Wed, 22 Aug 2007 15:39:38 GMT",
"version": "v1"
},
{
"created": "Tue, 28 Aug 2007 10:09:39 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Capozziello",
"S.",
""
],
[
"Cianci",
"R.",
""
],
[
"Stornaiolo",
"C.",
""
],
[
"Vignolo",
"S.",
""
]
] | The role of torsion in f(R) gravity is considered in the framework of metric-affine formalism. We discuss the field equations in empty space and in presence of perfect fluid matter taking into account the analogy with the Palatini formalism. As a result, the extra curvature and torsion degrees of freedom can be dealt a... |
gr-qc/0001049 | Jiri Podolsky | J. Podolsky, J. B. Griffiths | The collision and snapping of cosmic strings generating spherical
impulsive gravitational waves | 10 pages, 6 figures, To appear in Class. Quantum Grav | Class.Quant.Grav.17:1401-1413,2000 | 10.1088/0264-9381/17/6/306 | null | gr-qc | null | The Penrose method for constructing spherical impulsive gravitational waves
is investigated in detail, including alternative spatial sections and an
arbitrary cosmological constant. The resulting waves include those that are
generated by a snapping cosmic string. The method is used to construct an
explicit exact solu... | [
{
"created": "Mon, 17 Jan 2000 17:59:44 GMT",
"version": "v1"
}
] | 2010-11-19 | [
[
"Podolsky",
"J.",
""
],
[
"Griffiths",
"J. B.",
""
]
] | The Penrose method for constructing spherical impulsive gravitational waves is investigated in detail, including alternative spatial sections and an arbitrary cosmological constant. The resulting waves include those that are generated by a snapping cosmic string. The method is used to construct an explicit exact soluti... |
2405.05038 | Sreejith Nair | Sreejith Nair, Aditya Vijaykumar, Sudipta Sarkar | Bounds on the charge of the graviton using gravitational wave
observations | 9 pages, 3 figures | null | null | LIGO DCC P2400160 | gr-qc astro-ph.HE hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | If the graviton possesses a non-zero charge $q_g$, gravitational waves (GW)
originating from astrophysical sources would experience an additional time
delay due to intergalactic magnetic fields. This would result in a modification
of the phase evolution of the observed GW signal similar to the effect induced
by a mas... | [
{
"created": "Wed, 8 May 2024 13:11:02 GMT",
"version": "v1"
}
] | 2024-05-09 | [
[
"Nair",
"Sreejith",
""
],
[
"Vijaykumar",
"Aditya",
""
],
[
"Sarkar",
"Sudipta",
""
]
] | If the graviton possesses a non-zero charge $q_g$, gravitational waves (GW) originating from astrophysical sources would experience an additional time delay due to intergalactic magnetic fields. This would result in a modification of the phase evolution of the observed GW signal similar to the effect induced by a massi... |
2210.14062 | Zhen Li | Zhen Li | Scalar Perturbation Around Rotating Regular Black Hole: Superradiance
Instability and Quasinormal Modes | 10 pages, 3 tables, 4 figures, Accepted for publication in Physical
Review D | null | 10.1103/PhysRevD.107.044013 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Black holes provide a natural laboratory to study particle physics and
astrophysics. When black holes are surrounded by matter fields, there will be
plenty of phenomena which can have observational consequences, from which we
can learn about the matter fields as well as black hole spacetime. In this
work, we investig... | [
{
"created": "Tue, 25 Oct 2022 14:44:12 GMT",
"version": "v1"
},
{
"created": "Mon, 23 Jan 2023 19:33:41 GMT",
"version": "v2"
}
] | 2023-02-22 | [
[
"Li",
"Zhen",
""
]
] | Black holes provide a natural laboratory to study particle physics and astrophysics. When black holes are surrounded by matter fields, there will be plenty of phenomena which can have observational consequences, from which we can learn about the matter fields as well as black hole spacetime. In this work, we investigat... |
0903.4230 | Hiromi Saida | Miho Urano, Akira Tomimatsu and Hiromi Saida | Mechanical First Law of Black Hole Spacetimes with Cosmological Constant
and Its Application to Schwarzschild-de Sitter Spacetime | Accepted for publication in Classical and Quantum Gravity, 16 pages,
no figure | Class.Quant.Grav.26:105010,2009 | 10.1088/0264-9381/26/10/105010 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The mechanical first law (MFL) of black hole spacetimes is a geometrical
relation which relates variations of mass parameter and horizon area. While it
is well known that the MFL of asymptotic flat black hole is equivalent to its
thermodynamical first law, however we do not know the detail of MFL of black
hole spacet... | [
{
"created": "Wed, 25 Mar 2009 03:33:36 GMT",
"version": "v1"
}
] | 2009-05-20 | [
[
"Urano",
"Miho",
""
],
[
"Tomimatsu",
"Akira",
""
],
[
"Saida",
"Hiromi",
""
]
] | The mechanical first law (MFL) of black hole spacetimes is a geometrical relation which relates variations of mass parameter and horizon area. While it is well known that the MFL of asymptotic flat black hole is equivalent to its thermodynamical first law, however we do not know the detail of MFL of black hole spacetim... |
1703.06763 | Muhammad Sharif | M. Sharif and Iqra Nawazish | Cosmological Analysis of Scalar Field Models in f(R,T) Gravity | 25 pages, 8 figures, to appear in EPJC | Eur. Phys. J. C 77(2017)198 | 10.1140/epjc/s10052-017-4773-1 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper determines the existence of Noether symmetry in non-minimally
coupled $f(R,T)$ gravity admitting minimal coupling with scalar field models.
We consider a generalized spacetime which corresponds to different anisotropic
and homogeneous universe models. We formulate symmetry generators along with
conserved q... | [
{
"created": "Thu, 16 Mar 2017 07:31:53 GMT",
"version": "v1"
}
] | 2017-04-26 | [
[
"Sharif",
"M.",
""
],
[
"Nawazish",
"Iqra",
""
]
] | This paper determines the existence of Noether symmetry in non-minimally coupled $f(R,T)$ gravity admitting minimal coupling with scalar field models. We consider a generalized spacetime which corresponds to different anisotropic and homogeneous universe models. We formulate symmetry generators along with conserved qua... |
2209.01595 | Emmanuil Saridakis | Petros Asimakis, Emmanuel N. Saridakis, Spyros Basilakos, Kuralay
Yesmakhanova | Big Bang Nucleosynthesis constraints on $f(T,T_G)$ gravity | 9 pages, 3 figures, invited paper to appear in Universe Special Issue
"Torsion-Gravity and Spinors in Fundamental Theoretical Physics", Special
Issue Editor: Luca Fabbri | null | 10.3390/universe8090486 | Universe 8 (2022) 9, 486 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We confront $f(T,T_G)$ gravity, with Big Bang Nucleosynthesis (BBN)
requirements. The former is obtained using both the torsion scalar, as well as
the teleparallel equivalent of the Gauss-Bonnet term, in the Lagrangian,
resulting to modified Friedmann equations in which the extra torsional terms
constitute an effecti... | [
{
"created": "Sun, 4 Sep 2022 11:14:17 GMT",
"version": "v1"
}
] | 2022-09-20 | [
[
"Asimakis",
"Petros",
""
],
[
"Saridakis",
"Emmanuel N.",
""
],
[
"Basilakos",
"Spyros",
""
],
[
"Yesmakhanova",
"Kuralay",
""
]
] | We confront $f(T,T_G)$ gravity, with Big Bang Nucleosynthesis (BBN) requirements. The former is obtained using both the torsion scalar, as well as the teleparallel equivalent of the Gauss-Bonnet term, in the Lagrangian, resulting to modified Friedmann equations in which the extra torsional terms constitute an effective... |
2107.02208 | Shammi Tahura | Shammi Tahura, David A. Nichols, Kent Yagi | Gravitational-wave memory effects in Brans-Dicke theory: Waveforms and
effects in the post-Newtonian approximation | 24 pages; v2: matches published version | null | 10.1103/PhysRevD.104.104010 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational-wave (GW) memory effects produce permanent shifts in the GW
strain and its time integrals after the passage of a burst of GWs. Their
presence is closely tied to symmetries of asymptotically flat spacetimes and
fluxes of conserved charges conjugate to these symmetries. While the
phenomenology of GW memor... | [
{
"created": "Mon, 5 Jul 2021 18:19:22 GMT",
"version": "v1"
},
{
"created": "Fri, 20 May 2022 19:20:36 GMT",
"version": "v2"
}
] | 2022-05-24 | [
[
"Tahura",
"Shammi",
""
],
[
"Nichols",
"David A.",
""
],
[
"Yagi",
"Kent",
""
]
] | Gravitational-wave (GW) memory effects produce permanent shifts in the GW strain and its time integrals after the passage of a burst of GWs. Their presence is closely tied to symmetries of asymptotically flat spacetimes and fluxes of conserved charges conjugate to these symmetries. While the phenomenology of GW memory ... |
1711.06357 | Jens Boos | Jens Boos, Valeri P. Frolov | Stationary black holes with stringy hair | 10 pages, 3 figures, matches the published version | Phys. Rev. D 97, 024024 (2018) | 10.1103/PhysRevD.97.024024 | Alberta-Thy-13-17 | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss properties of black holes which are pierced by special
configurations of cosmic strings. For static black holes we consider radial
strings in the limit when the number of strings grows to infinity while the
tension of each single string tends to zero. In a properly taken limit the
stress-energy tensor of t... | [
{
"created": "Thu, 16 Nov 2017 23:49:15 GMT",
"version": "v1"
},
{
"created": "Tue, 23 Jan 2018 19:28:24 GMT",
"version": "v2"
}
] | 2018-01-31 | [
[
"Boos",
"Jens",
""
],
[
"Frolov",
"Valeri P.",
""
]
] | We discuss properties of black holes which are pierced by special configurations of cosmic strings. For static black holes we consider radial strings in the limit when the number of strings grows to infinity while the tension of each single string tends to zero. In a properly taken limit the stress-energy tensor of the... |
2109.08150 | Kimet Jusufi | Farruh Atamurotov, Kimet Jusufi, Mubasher Jamil, Ahmadjon
Abdujabbarov, Mustapha Azreg-A\"inou | Axion-plasmon or magnetized plasma effect on an observable shadow and
gravitational lensing of a Schwarzschild black hole | 14 pages, 9 figures. Accepted for publication in Physical Review D | Physical Review D 104, 064053 (2021) | 10.1103/PhysRevD.104.064053 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study the influence of the axion-plasmon, as proposed in
(Phys. Rev. Lett. 120, 181803 (2018)) on the optical properties of the
Schwarzschild black hole. Our aim is to provide a test to detect the effects of
a fixed axion background using black holes. To accomplish our goal, we explore
the effect of... | [
{
"created": "Thu, 16 Sep 2021 07:36:32 GMT",
"version": "v1"
}
] | 2021-09-22 | [
[
"Atamurotov",
"Farruh",
""
],
[
"Jusufi",
"Kimet",
""
],
[
"Jamil",
"Mubasher",
""
],
[
"Abdujabbarov",
"Ahmadjon",
""
],
[
"Azreg-Aïnou",
"Mustapha",
""
]
] | In this paper, we study the influence of the axion-plasmon, as proposed in (Phys. Rev. Lett. 120, 181803 (2018)) on the optical properties of the Schwarzschild black hole. Our aim is to provide a test to detect the effects of a fixed axion background using black holes. To accomplish our goal, we explore the effect of t... |
1011.0895 | Fernando Porcelli Dr. | Fernando Porcelli and Giancarlo Scibona | On the Black Hole's Thermodynamics and the Entropic Origin of Gravity | 10 pages, no figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Schwarzschild's black hole dynamics in presence of gravity is described
on using the thermodynamic equations of state for contractile materials. Its
entropy and temperature, obtained by using classical principles, reproduce the
results derived from quantum field theories and statistical mechanics. The
given resul... | [
{
"created": "Wed, 3 Nov 2010 14:27:11 GMT",
"version": "v1"
}
] | 2010-11-04 | [
[
"Porcelli",
"Fernando",
""
],
[
"Scibona",
"Giancarlo",
""
]
] | The Schwarzschild's black hole dynamics in presence of gravity is described on using the thermodynamic equations of state for contractile materials. Its entropy and temperature, obtained by using classical principles, reproduce the results derived from quantum field theories and statistical mechanics. The given results... |
2104.04970 | Mengjie Wang | Mengjie Wang, Zhou Chen, Xin Tong, Qiyuan Pan, Jiliang Jing | Bifurcation of the Maxwell quasinormal spectrum on asymptotically
anti-de Sitter black holes | 7 pages, published in Phys. Rev. D | Phys.Rev.D 103 (2021) 6, 064079 | 10.1103/PhysRevD.103.064079 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the Maxwell quasinormal spectrum on asymptotically anti-de Sitter
black holes with a set of two Robin type boundary conditions, by requiring the
energy flux to vanish at asymptotic infinity. Focusing, for illustrative
purposes, on Schwarzschild-anti-de Sitter black holes both without and with a
global monopo... | [
{
"created": "Sun, 11 Apr 2021 09:26:34 GMT",
"version": "v1"
}
] | 2021-04-13 | [
[
"Wang",
"Mengjie",
""
],
[
"Chen",
"Zhou",
""
],
[
"Tong",
"Xin",
""
],
[
"Pan",
"Qiyuan",
""
],
[
"Jing",
"Jiliang",
""
]
] | We study the Maxwell quasinormal spectrum on asymptotically anti-de Sitter black holes with a set of two Robin type boundary conditions, by requiring the energy flux to vanish at asymptotic infinity. Focusing, for illustrative purposes, on Schwarzschild-anti-de Sitter black holes both without and with a global monopole... |
1203.5774 | Salvador Robles-Perez | Salvador Robles-Perez | Entanglement arrow of time in the multiverse | 6 pages, 1 figure. Some changes have been made in Sec. III and one
figure has been removed | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper it is presented the model of a multiverse made up of entangled
pairs of universes. The arrow of time obtained from the principles of
thermodynamics and the arrow of time given by the thermodynamics of
entanglement for single universes are analyzed. The latter requires that the
single universes expand on... | [
{
"created": "Mon, 26 Mar 2012 19:48:21 GMT",
"version": "v1"
},
{
"created": "Sat, 7 Apr 2012 10:15:06 GMT",
"version": "v2"
}
] | 2012-04-10 | [
[
"Robles-Perez",
"Salvador",
""
]
] | In this paper it is presented the model of a multiverse made up of entangled pairs of universes. The arrow of time obtained from the principles of thermodynamics and the arrow of time given by the thermodynamics of entanglement for single universes are analyzed. The latter requires that the single universes expand once... |
2110.14730 | Kamiel Janssens | Kamiel Janssens and Katarina Martinovic and Nelson Christensen and
Patrick M. Meyers and Mairi Sakellariadou | Impact of Schumann resonances on the Einstein Telescope and projections
for the magnetic coupling function | May 30th 2022 - New version contains updated figures in agreement
with erratum: https://doi.org/10.1103/PhysRevD.105.109904 | Phys. Rev. D 104, 122006 (2021) | 10.1103/PhysRevD.104.122006 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Correlated magnetic noise in the form of Schumann resonances could introduce
limitations to the gravitational-wave background searches of future Earth-based
gravitational-wave detectors. We consider recorded magnetic activity at a
candidate site for the Einstein Telescope, and forecast the necessary measures
to ensur... | [
{
"created": "Wed, 27 Oct 2021 19:31:50 GMT",
"version": "v1"
},
{
"created": "Mon, 30 May 2022 11:23:10 GMT",
"version": "v2"
}
] | 2022-05-31 | [
[
"Janssens",
"Kamiel",
""
],
[
"Martinovic",
"Katarina",
""
],
[
"Christensen",
"Nelson",
""
],
[
"Meyers",
"Patrick M.",
""
],
[
"Sakellariadou",
"Mairi",
""
]
] | Correlated magnetic noise in the form of Schumann resonances could introduce limitations to the gravitational-wave background searches of future Earth-based gravitational-wave detectors. We consider recorded magnetic activity at a candidate site for the Einstein Telescope, and forecast the necessary measures to ensure ... |
1501.03687 | Rui Chen | Ge-Rui Chen and Yong-Chang Huang | Revisiting the tunneling spectrum and information recovery of a general
charged and rotating black hole | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we revisit the tunneling spectrum of a charged and rotating
black hole--Kerr-Newman black hole by using Parikh and Wilczek's tunneling
method and get the most general result compared with the works [9, 10]. We find
an ambiguity in Parikh and Wilczek's tunneling method, and give a reasonable
description.... | [
{
"created": "Thu, 15 Jan 2015 14:13:55 GMT",
"version": "v1"
}
] | 2015-01-16 | [
[
"Chen",
"Ge-Rui",
""
],
[
"Huang",
"Yong-Chang",
""
]
] | In this paper we revisit the tunneling spectrum of a charged and rotating black hole--Kerr-Newman black hole by using Parikh and Wilczek's tunneling method and get the most general result compared with the works [9, 10]. We find an ambiguity in Parikh and Wilczek's tunneling method, and give a reasonable description. W... |
gr-qc/0612014 | Ettore Minguzzi | E. Minguzzi | Eisenhart's theorem and the causal simplicity of Eisenhart's spacetime | Latex2e, 29 pages, 2 figures, uses psfrag package. v2: a problem with
theorem 5.5, which was erroneously stated twice, and some misprints have been
fixed, v3: change of definition of function I in theorem 5.5 | Class.Quant.Grav.24:2781-2808,2007 | 10.1088/0264-9381/24/11/002 | null | gr-qc | null | We give a causal version of Eisenhart's geodesic characterization of
classical mechanics. We emphasize the geometric, coordinate independent
properties needed to express Eisenhart's theorem in light of modern studies on
the Bargmann structures (lightlike dimensional reduction, pp-waves). The
construction of the space... | [
{
"created": "Sun, 3 Dec 2006 16:34:02 GMT",
"version": "v1"
},
{
"created": "Fri, 8 Dec 2006 16:04:32 GMT",
"version": "v2"
},
{
"created": "Mon, 23 Apr 2007 10:08:55 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Minguzzi",
"E.",
""
]
] | We give a causal version of Eisenhart's geodesic characterization of classical mechanics. We emphasize the geometric, coordinate independent properties needed to express Eisenhart's theorem in light of modern studies on the Bargmann structures (lightlike dimensional reduction, pp-waves). The construction of the space m... |
gr-qc/0012100 | Alejandro Perez | Alejandro Perez and Osvaldo M. Moreschi | Characterizing exact solutions from asymptotic physical concepts | null | null | null | null | gr-qc | null | We contribute to the subject of the physical interpretation of exact
solutions by characterizing them through a systematic study in terms of
unambiguous physical concepts coming from systems in linearized gravity. We use
the physical meaning of the leading order behavior of the Weyl spinor
components $\Psi_0^0$, $\Ps... | [
{
"created": "Wed, 27 Dec 2000 18:12:14 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Perez",
"Alejandro",
""
],
[
"Moreschi",
"Osvaldo M.",
""
]
] | We contribute to the subject of the physical interpretation of exact solutions by characterizing them through a systematic study in terms of unambiguous physical concepts coming from systems in linearized gravity. We use the physical meaning of the leading order behavior of the Weyl spinor components $\Psi_0^0$, $\Psi_... |
1501.00007 | Veronika E. Hubeny | Veronika E. Hubeny | The AdS/CFT Correspondence | 51 pages, 1 figure. Written for a broad GR audience; submitted to
Classical and Quantum Gravity for its "Milestones of General Relativity"
focus issue to be published during the Centenary Year of GR; v2: minor edits
and added references; matches the published CQG version | null | 10.1088/0264-9381/32/12/124010 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We give a brief review of the AdS/CFT correspondence, which posits the
equivalence between a certain gravitational theory and a lower-dimensional
non-gravitational one. This remarkable duality, formulated in 1997, has sparked
a vigorous research program which has gained in breadth over the years, with
applications to... | [
{
"created": "Tue, 30 Dec 2014 21:00:11 GMT",
"version": "v1"
},
{
"created": "Thu, 19 Feb 2015 21:04:48 GMT",
"version": "v2"
}
] | 2015-06-17 | [
[
"Hubeny",
"Veronika E.",
""
]
] | We give a brief review of the AdS/CFT correspondence, which posits the equivalence between a certain gravitational theory and a lower-dimensional non-gravitational one. This remarkable duality, formulated in 1997, has sparked a vigorous research program which has gained in breadth over the years, with applications to m... |
2204.00767 | Pablo Guilleminot M. Sc. | Pablo Guilleminot, Nelson Merino and Rodrigo Olea | Thin shell dynamics in Lovelock gravity | null | null | 10.1140/epjc/s10052-022-10965-y | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study matching conditions for a spherically symmetric thin shell in
Lovelock gravity which can be read off from the variation of the corresponding
first-order action. In point of fact, the addition of Myers' boundary terms to
the gravitational action eliminates the dependence on the acceleration in this
functional... | [
{
"created": "Sat, 2 Apr 2022 05:27:51 GMT",
"version": "v1"
}
] | 2022-11-30 | [
[
"Guilleminot",
"Pablo",
""
],
[
"Merino",
"Nelson",
""
],
[
"Olea",
"Rodrigo",
""
]
] | We study matching conditions for a spherically symmetric thin shell in Lovelock gravity which can be read off from the variation of the corresponding first-order action. In point of fact, the addition of Myers' boundary terms to the gravitational action eliminates the dependence on the acceleration in this functional a... |
2206.11149 | Georgios Lukes-Gerakopoulos | Iason Timogiannis, Georgios Lukes-Gerakopoulos, Theocharis A.
Apostolatos | Spinning test body orbiting around a Kerr black hole: Comparing Spin
Supplementary Conditions for Circular Equatorial Orbits | 15 pages, 4 figures, 5 tables, 2 Mathematica notebooks | null | 10.1103/PhysRevD.106.044039 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The worldline of a spinning test body moving in curved spacetime can be
provided by the Mathisson-Papapetrou-Dixon (MPD) equations when its centroid,
i.e. its center of mass, is fixed by a Spin Supplementary Condition (SSC). In
the present study, we continue the exploration of shifts between different
centroids start... | [
{
"created": "Wed, 22 Jun 2022 14:55:18 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Aug 2022 09:28:16 GMT",
"version": "v2"
}
] | 2022-08-31 | [
[
"Timogiannis",
"Iason",
""
],
[
"Lukes-Gerakopoulos",
"Georgios",
""
],
[
"Apostolatos",
"Theocharis A.",
""
]
] | The worldline of a spinning test body moving in curved spacetime can be provided by the Mathisson-Papapetrou-Dixon (MPD) equations when its centroid, i.e. its center of mass, is fixed by a Spin Supplementary Condition (SSC). In the present study, we continue the exploration of shifts between different centroids started... |
1106.3817 | Shahar Hod | Shahar Hod | Higher-dimensional violations of the holographic entropy bound | 5 pages | Phys.Lett.B695:294-297,2011 | 10.1016/j.physletb.2010.10.045 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The holographic bound, $S<=A/4{\ell^2_P}$, asserts that the entropy $S$ of a
system is bounded from above by a quarter of the area $A$ of a circumscribing
surface measured in Planck areas. This bound is widely regarded as part of the
elusive fundamental theory of nature. In fact, the bound is known to be valid
for ge... | [
{
"created": "Mon, 20 Jun 2011 06:15:25 GMT",
"version": "v1"
}
] | 2012-10-11 | [
[
"Hod",
"Shahar",
""
]
] | The holographic bound, $S<=A/4{\ell^2_P}$, asserts that the entropy $S$ of a system is bounded from above by a quarter of the area $A$ of a circumscribing surface measured in Planck areas. This bound is widely regarded as part of the elusive fundamental theory of nature. In fact, the bound is known to be valid for gene... |
gr-qc/9605033 | Andrzey Krolak | Pankaj S. Joshi, Andrzej Krolak | Naked strong curvature singularities in Szekeres space-times | latex, 9 pages | Class.Quant.Grav. 13 (1996) 3069-3074 | 10.1088/0264-9381/13/11/020 | null | gr-qc | null | We investigate the occurrence and nature of naked singularities in the
Szekeres space-times. These space-times represent irrotational dust. They do
not have any Killing vectors and they are generalisations of the
Tolman-Bondi-Lemaitre space-times. It is shown that in these space-times there
exist naked singularities ... | [
{
"created": "Fri, 17 May 1996 08:50:08 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Joshi",
"Pankaj S.",
""
],
[
"Krolak",
"Andrzej",
""
]
] | We investigate the occurrence and nature of naked singularities in the Szekeres space-times. These space-times represent irrotational dust. They do not have any Killing vectors and they are generalisations of the Tolman-Bondi-Lemaitre space-times. It is shown that in these space-times there exist naked singularities th... |
1607.02510 | Shahar Hod | Shahar Hod | Hawking radiation and the Stefan-Boltzmann law: The effective radius of
the black-hole quantum atmosphere | 6 pages | Physics Letters B 757, 121 (2016) | 10.1016/j.physletb.2016.03.071 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It has recently been suggested [S. B. Giddings, Phys. Lett. B {\bf 754}, 39
(2016)] that the Hawking black-hole radiation spectrum originates from an
effective quantum "atmosphere" which extends well outside the black-hole
horizon. In particular, comparing the Hawking radiation power of a
$(3+1)$-dimensional Schwarzs... | [
{
"created": "Fri, 8 Jul 2016 20:00:02 GMT",
"version": "v1"
}
] | 2016-07-20 | [
[
"Hod",
"Shahar",
""
]
] | It has recently been suggested [S. B. Giddings, Phys. Lett. B {\bf 754}, 39 (2016)] that the Hawking black-hole radiation spectrum originates from an effective quantum "atmosphere" which extends well outside the black-hole horizon. In particular, comparing the Hawking radiation power of a $(3+1)$-dimensional Schwarzsch... |
gr-qc/0605009 | Mohammad Nouri-Zonoz | N. Ahmadi and M. Nouri-Zonoz | Quantum gravitational optics: Effective Raychaudhuri equation | 17 pages, 1 figure, RevTex format, Replaced with the published
version | Phys.Rev. D74 (2006) 044034 | 10.1103/PhysRevD.74.044034 | null | gr-qc | null | Vacuum polarization in QED in a background gravitational field induces
interactions which {\it effectively} modify the classical picture of light
rays, as the null geodesics of spacetime. These interactions violate the strong
equivalence principle and affect the propagation of light leading to
superluminal photon vel... | [
{
"created": "Mon, 1 May 2006 07:23:18 GMT",
"version": "v1"
},
{
"created": "Tue, 26 Dec 2006 13:54:11 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Ahmadi",
"N.",
""
],
[
"Nouri-Zonoz",
"M.",
""
]
] | Vacuum polarization in QED in a background gravitational field induces interactions which {\it effectively} modify the classical picture of light rays, as the null geodesics of spacetime. These interactions violate the strong equivalence principle and affect the propagation of light leading to superluminal photon veloc... |
1907.07486 | Shaoqi Hou | Shaoqi Hou, Xi-Long Fan, Zong-Hong Zhu | Gravitational Lensing of Gravitational Waves: Rotation of Polarization
Plane | 6 pages, 1 figure. Match the published version | Phys. Rev. D 100, 064028 (2019) | 10.1103/PhysRevD.100.064028 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Similar to the light, gravitational waves traveling in multiple paths may
arrive at the same location if there is a gravitational lens on their way.
Apart from the magnification of the amplitudes and the time delay between the
gravitational wave rays, gravitational lensing also rotates their polarization
planes. This... | [
{
"created": "Wed, 17 Jul 2019 12:54:39 GMT",
"version": "v1"
},
{
"created": "Wed, 18 Sep 2019 00:22:41 GMT",
"version": "v2"
}
] | 2019-09-19 | [
[
"Hou",
"Shaoqi",
""
],
[
"Fan",
"Xi-Long",
""
],
[
"Zhu",
"Zong-Hong",
""
]
] | Similar to the light, gravitational waves traveling in multiple paths may arrive at the same location if there is a gravitational lens on their way. Apart from the magnification of the amplitudes and the time delay between the gravitational wave rays, gravitational lensing also rotates their polarization planes. This r... |
gr-qc/9802066 | Neil John Cornish | Neil J. Cornish and Neil G. Turok (DAMTP, Cambridge University) | Ringing the eigenmodes from compact manifolds | 11 pages, 8 figures, IOP format. To be published in the proceedings
of the Cleveland Cosmology and Topology Workshop 17-19 Oct 1997. Submitted to
Class. Quant. Grav | Class.Quant.Grav.15:2699-2710,1998 | 10.1088/0264-9381/15/9/016 | DAMTP-R-98/09 | gr-qc astro-ph | null | We present a method for finding the eigenmodes of the Laplace operator acting
on any compact manifold. The procedure can be used to simulate cosmic microwave
background fluctuations in multi-connected cosmological models. Other
applications include studies of chaotic mixing and quantum chaos.
| [
{
"created": "Thu, 26 Feb 1998 19:28:47 GMT",
"version": "v1"
}
] | 2011-04-15 | [
[
"Cornish",
"Neil J.",
"",
"DAMTP, Cambridge University"
],
[
"Turok",
"Neil G.",
"",
"DAMTP, Cambridge University"
]
] | We present a method for finding the eigenmodes of the Laplace operator acting on any compact manifold. The procedure can be used to simulate cosmic microwave background fluctuations in multi-connected cosmological models. Other applications include studies of chaotic mixing and quantum chaos. |
gr-qc/9403061 | null | B. L. Hu | Quantum Statistical Field Theory in Gravitation and Cosmology | Latex 38 pages, umdpp 94-45 Three Lectures given at the Canadian
Summer School for Theoretical Physics and the Third International Workshop on
Thermal Field Theories and Applications, Banff, Canada, Alberta, August
15-28, 1993. Proceedings edited by R. Kobes and G. Kunstatter (World
Scientific, Singapore, 1994) | null | null | null | gr-qc hep-th | null | We describe how the concepts of quantum open systems and the methods of
closed-time-path (CTP) effective action and influence functional (IF) can be
usefully applied to the analysis of statistical mechanical problems involving
quantum fields in gravitation and cosmology. In the first lecture we discuss in
general ter... | [
{
"created": "Wed, 30 Mar 1994 12:59:54 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Hu",
"B. L.",
""
]
] | We describe how the concepts of quantum open systems and the methods of closed-time-path (CTP) effective action and influence functional (IF) can be usefully applied to the analysis of statistical mechanical problems involving quantum fields in gravitation and cosmology. In the first lecture we discuss in general terms... |
1511.02169 | Federico Piazza | Federico Piazza and Thomas Schucker | Minimal cosmography | 13 pages. v2: improved version to appear on Gen. Rel. and Grav | null | 10.1007/s10714-016-2039-0 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The minimal requirement for cosmography - a nondynamical description of the
universe - is a prescription for calculating null geodesics, and timelike
geodesics as a function of their proper time. In this paper, we consider the
most general linear connection compatible with homogeneity and isotropy, but
not necessaril... | [
{
"created": "Thu, 5 Nov 2015 14:23:36 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Mar 2016 11:15:30 GMT",
"version": "v2"
}
] | 2016-04-13 | [
[
"Piazza",
"Federico",
""
],
[
"Schucker",
"Thomas",
""
]
] | The minimal requirement for cosmography - a nondynamical description of the universe - is a prescription for calculating null geodesics, and timelike geodesics as a function of their proper time. In this paper, we consider the most general linear connection compatible with homogeneity and isotropy, but not necessarily ... |
gr-qc/9701017 | Victor Berezin | Victor Berezin | Square-root quantization: application to quantum black holes | LaTeX file Talk given on the Second Conference on Constrained
Dynamics and Quantum Gravity, Santa Margherita, Ligure, Italy, 17-21
September 1996 | Nucl.Phys.Proc.Suppl. 57 (1997) 181-183 | 10.1016/S0920-5632(97)00370-8 | null | gr-qc | null | Two different ways of quantizing the relativistic Hamiltonian for radial
motion in the field of Coulomb-like potential are compared. The results depend
slightly on choice of time. In the case of Lorentzian time a Sommerfeld
spectrum is recovered. Application to quantum black holes gives a sqrt{n} mass
spectrum with a... | [
{
"created": "Fri, 10 Jan 1997 15:17:00 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Berezin",
"Victor",
""
]
] | Two different ways of quantizing the relativistic Hamiltonian for radial motion in the field of Coulomb-like potential are compared. The results depend slightly on choice of time. In the case of Lorentzian time a Sommerfeld spectrum is recovered. Application to quantum black holes gives a sqrt{n} mass spectrum with abo... |
1007.5175 | Sven Zschocke | Sven Zschocke and Sergei A. Klioner | Further simplification of the light deflection formula for solar system
objects | 9 pages, no figures, report for astrometric mission Gaia | null | null | GAIA-CA-TN-LO-SZ-005-1 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The transformation n to k in post-post-Newtonian order is simplified. All
post-post-Newtonian terms of the order m^2/d^2 are neglected and we show that
the total sum of these terms is smaller than 15/4 pi m^2/d^2. This simpler
transformation will improve the efficiency of Gaia data reduction.
| [
{
"created": "Thu, 29 Jul 2010 10:13:31 GMT",
"version": "v1"
}
] | 2010-08-03 | [
[
"Zschocke",
"Sven",
""
],
[
"Klioner",
"Sergei A.",
""
]
] | The transformation n to k in post-post-Newtonian order is simplified. All post-post-Newtonian terms of the order m^2/d^2 are neglected and we show that the total sum of these terms is smaller than 15/4 pi m^2/d^2. This simpler transformation will improve the efficiency of Gaia data reduction. |
1012.4719 | Muxin Han | Eugenio Bianchi, Muxin Han, Elena Magliaro, Claudio Perini, Carlo
Rovelli, Wolfgang Wieland | Spinfoam fermions | 8 pages, no figure | Class. Quantum Grav. 30 (2013) 235023 | 10.1088/0264-9381/30/23/235023 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We describe a minimal coupling of fermions and Yang Mills fields to the loop
quantum gravity dynamics. The coupling takes a very simple form.
| [
{
"created": "Tue, 21 Dec 2010 16:25:46 GMT",
"version": "v1"
},
{
"created": "Thu, 31 Oct 2013 09:40:16 GMT",
"version": "v2"
}
] | 2013-11-01 | [
[
"Bianchi",
"Eugenio",
""
],
[
"Han",
"Muxin",
""
],
[
"Magliaro",
"Elena",
""
],
[
"Perini",
"Claudio",
""
],
[
"Rovelli",
"Carlo",
""
],
[
"Wieland",
"Wolfgang",
""
]
] | We describe a minimal coupling of fermions and Yang Mills fields to the loop quantum gravity dynamics. The coupling takes a very simple form. |
1311.0488 | Orchidea Maria Lecian | Orchidea Maria Lecian | Periodic orbits in cosmological billiards: the Selberg trace formula for
asymptotic Bianchi IX universes, evidence for scars in the wavefunction of
the quantum universe and large-scale structure anisotropies of the present
universe | 33 pages, 13 tables, 3 figures | null | null | null | gr-qc astro-ph.GA hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Selberg trace formula is specified for cosmological billiards in $4=3+1$
spacetime dimensions. The spectral formula is rewritten as an exact sum over
the initial conditions for the Einstein field equations for which periodic
orbits are implied. For this, a suitable density of measure invariant under the
billiard ... | [
{
"created": "Sun, 3 Nov 2013 16:20:01 GMT",
"version": "v1"
}
] | 2013-11-05 | [
[
"Lecian",
"Orchidea Maria",
""
]
] | The Selberg trace formula is specified for cosmological billiards in $4=3+1$ spacetime dimensions. The spectral formula is rewritten as an exact sum over the initial conditions for the Einstein field equations for which periodic orbits are implied. For this, a suitable density of measure invariant under the billiard ma... |
1303.7391 | Abdul Jawad | M. Sharif and Abdul Jawad | Thermodynamics in Closed Universe with Entropy Corrections | 25 pages, No figure | Int. J. Mod. Phys. D 22(2013)1350014 | 10.1142/S0218271813500144 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the generalized second law of thermodynamics in three different
systems by taking quantum corrections (logarithmic and power law) to
cosmological horizon entropy as well as black hole entropy. Firstly, we
consider phantom energy accretion onto the Schwarzschild black hole in the
closed FRW universe and inv... | [
{
"created": "Tue, 26 Mar 2013 05:17:27 GMT",
"version": "v1"
}
] | 2015-06-15 | [
[
"Sharif",
"M.",
""
],
[
"Jawad",
"Abdul",
""
]
] | We discuss the generalized second law of thermodynamics in three different systems by taking quantum corrections (logarithmic and power law) to cosmological horizon entropy as well as black hole entropy. Firstly, we consider phantom energy accretion onto the Schwarzschild black hole in the closed FRW universe and inves... |
gr-qc/0207032 | Stephen A. Fulling | S. A. Fulling, B.-G. Englert, and M. D. Pilloff | Interacting Bosons at Finite Temperature: How Bogolubov Visited a Black
Hole and Came Home Again | 25 pages, LaTeX. To appear in a special issue of Foundations of
Physics in honor of Jacob Bekenstein | Found.Phys. 33 (2003) 87-110 | 10.1023/A:1022819825765 | null | gr-qc cond-mat quant-ph | null | The structure of the thermal equilibrium state of a weakly interacting Bose
gas is of current interest. We calculate the density matrix of that state in
two ways. The most effective method, in terms of yielding a simple, explicit
answer, is to construct a generating function within the traditional framework
of quantu... | [
{
"created": "Fri, 5 Jul 2002 19:19:28 GMT",
"version": "v1"
}
] | 2022-10-12 | [
[
"Fulling",
"S. A.",
""
],
[
"Englert",
"B. -G.",
""
],
[
"Pilloff",
"M. D.",
""
]
] | The structure of the thermal equilibrium state of a weakly interacting Bose gas is of current interest. We calculate the density matrix of that state in two ways. The most effective method, in terms of yielding a simple, explicit answer, is to construct a generating function within the traditional framework of quantum ... |
2212.13095 | M.V.S. Saketh | M. V. S. Saketh, Jan Steinhoff, Justin Vines, Alessandra Buonanno | Modeling horizon absorption in spinning binary black holes using
effective worldline theory | 29 Pages, 1 figure, 2 tables | null | 10.1103/PhysRevD.107.084006 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The mass and spin of black holes (BHs) in binary systems may change due to
the infall of gravitational-wave (GW) energy down the horizons. For spinning
BHs, this effect enters at 2.5 post-Newtonian (PN) order relative to the
leading-order energy flux at infinity. There is currently a discrepancy in the
literature in ... | [
{
"created": "Mon, 26 Dec 2022 11:42:01 GMT",
"version": "v1"
},
{
"created": "Tue, 10 Jan 2023 14:02:51 GMT",
"version": "v2"
}
] | 2023-04-19 | [
[
"Saketh",
"M. V. S.",
""
],
[
"Steinhoff",
"Jan",
""
],
[
"Vines",
"Justin",
""
],
[
"Buonanno",
"Alessandra",
""
]
] | The mass and spin of black holes (BHs) in binary systems may change due to the infall of gravitational-wave (GW) energy down the horizons. For spinning BHs, this effect enters at 2.5 post-Newtonian (PN) order relative to the leading-order energy flux at infinity. There is currently a discrepancy in the literature in th... |
1301.2737 | Martin Richarte MR | Luis P. Chimento, M\'onica I. Forte, and Mart\'in G. Richarte | Modified holographic Ricci dark energy coupled to interacting dark
matter and a non interacting baryonic component | 11 pages, 6 figures, two columns. Accepted for publication in The
European Physical Journal C (2013) | The European Physical Journal C, Volume 73, article id. #2285
(2013) | 10.1140/epjc/s10052-013-2285-1 | null | gr-qc astro-ph.CO physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examine a Friedmann-Robertson-Walker universe filled with interacting dark
matter, modified holographic Ricci dark energy (MHRDE), and a decoupled
baryonic component.The estimations of the cosmic parameters with Hubble data
lead to an age of the universe of $13.17 {\rm Gyr}$ and show that the MHRDE is
free from th... | [
{
"created": "Sun, 13 Jan 2013 00:36:23 GMT",
"version": "v1"
}
] | 2013-04-02 | [
[
"Chimento",
"Luis P.",
""
],
[
"Forte",
"Mónica I.",
""
],
[
"Richarte",
"Martín G.",
""
]
] | We examine a Friedmann-Robertson-Walker universe filled with interacting dark matter, modified holographic Ricci dark energy (MHRDE), and a decoupled baryonic component.The estimations of the cosmic parameters with Hubble data lead to an age of the universe of $13.17 {\rm Gyr}$ and show that the MHRDE is free from the ... |
1610.04443 | Yurii Ignat'ev | Yu.G. Ignat'ev and A.A. Agathonov | The Qualitative and Numerical Analysis of the Cosmological Model Based
on Phantom Scalar Field with Self | 12 pages, 12 figures, 12 references | null | 10.1007/s11182-017-1016-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we investigate the asymptotic behavior of the cosmological
model based on phantom scalar field on the ground of qualitative analysis of
the system of the cosmological model's differential equations and show that as
opposed to models with classical scalar field, such models have stable
asymptotic solutio... | [
{
"created": "Fri, 14 Oct 2016 13:10:48 GMT",
"version": "v1"
}
] | 2017-04-26 | [
[
"Ignat'ev",
"Yu. G.",
""
],
[
"Agathonov",
"A. A.",
""
]
] | In this paper we investigate the asymptotic behavior of the cosmological model based on phantom scalar field on the ground of qualitative analysis of the system of the cosmological model's differential equations and show that as opposed to models with classical scalar field, such models have stable asymptotic solutions... |
gr-qc/0011108 | Simonetta Frittelli | Simonetta Frittelli, Thomas P. Kling and Ezra T. Newman | Image distortion from optical scalars in non perturbative gravitational
lensing | 17 pages, 3 figures, to appear in Phys. Rev. D (January 2001) | Phys.Rev. D63 (2001) 023007 | 10.1103/PhysRevD.63.023007 | null | gr-qc | null | In a previous article concerning image distortion in non-perturbative
gravitational lensing theory we described how to introduce shape and distortion
parameters for small sources. We also showed how they could be expressed in
terms of the scalar products of the geodesic deviation vectors of the source's
pencil of ray... | [
{
"created": "Wed, 29 Nov 2000 16:10:52 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Frittelli",
"Simonetta",
""
],
[
"Kling",
"Thomas P.",
""
],
[
"Newman",
"Ezra T.",
""
]
] | In a previous article concerning image distortion in non-perturbative gravitational lensing theory we described how to introduce shape and distortion parameters for small sources. We also showed how they could be expressed in terms of the scalar products of the geodesic deviation vectors of the source's pencil of rays ... |
1807.02041 | Elena De Paoli | Tommaso De Lorenzo, Elena De Paoli, Simone Speziale | Spacetime Thermodynamics with Contorsion | 21 pages, 2 figures | Phys. Rev. D 98, 064053 (2018) | 10.1103/PhysRevD.98.064053 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove that a conserved effective energy-momentum tensor for
Einstein-Cartan theory can be identified from the Noether identities of the
matter Lagrangian, using the torsion field equations relating them. More
precisely, a one-parameter family labelled by the Immirzi parameter. We use
this result and the contorsion... | [
{
"created": "Thu, 5 Jul 2018 15:00:34 GMT",
"version": "v1"
},
{
"created": "Wed, 19 Sep 2018 15:54:11 GMT",
"version": "v2"
}
] | 2018-10-03 | [
[
"De Lorenzo",
"Tommaso",
""
],
[
"De Paoli",
"Elena",
""
],
[
"Speziale",
"Simone",
""
]
] | We prove that a conserved effective energy-momentum tensor for Einstein-Cartan theory can be identified from the Noether identities of the matter Lagrangian, using the torsion field equations relating them. More precisely, a one-parameter family labelled by the Immirzi parameter. We use this result and the contorsion d... |
gr-qc/0511121 | Guihua Tian | Guihua Tian | Does the Schwarzschild black hole really exist? | 4 pages, no figures | null | null | null | gr-qc | null | We use the Kruskal time coordinate T to define the initial time. By this way,
it naturally divides the stable study into one connected with the two regions:
the white-hole-connected region and the black-hole-connected region. The union
of the two regions covers the Schwarzschild space-time (r>2m). We also obtain
the ... | [
{
"created": "Tue, 22 Nov 2005 11:00:28 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Tian",
"Guihua",
""
]
] | We use the Kruskal time coordinate T to define the initial time. By this way, it naturally divides the stable study into one connected with the two regions: the white-hole-connected region and the black-hole-connected region. The union of the two regions covers the Schwarzschild space-time (r>2m). We also obtain the ve... |
1707.05280 | Jose Luis Bl\'azquez-Salcedo | Zahra Altaha Motahar, Jose Luis Bl\'azquez-Salcedo, Burkhard Kleihaus,
Jutta Kunz | Scalarization of neutron stars with realistic equations of state | 17 pages, 9 figures, matches version published in PRD | Phys. Rev. D 96, 064046 (2017) | 10.1103/PhysRevD.96.064046 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the effect of scalarization on static and slowly rotating neutron
stars for a wide variety of realistic equations of state, including pure
nuclear matter, nuclear matter with hyperons, hybrid nuclear and quark matter,
and pure quark matter. We analyze the onset of scalarization, presenting a
universal rel... | [
{
"created": "Mon, 17 Jul 2017 16:54:19 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Sep 2017 12:05:08 GMT",
"version": "v2"
}
] | 2017-09-28 | [
[
"Motahar",
"Zahra Altaha",
""
],
[
"Blázquez-Salcedo",
"Jose Luis",
""
],
[
"Kleihaus",
"Burkhard",
""
],
[
"Kunz",
"Jutta",
""
]
] | We consider the effect of scalarization on static and slowly rotating neutron stars for a wide variety of realistic equations of state, including pure nuclear matter, nuclear matter with hyperons, hybrid nuclear and quark matter, and pure quark matter. We analyze the onset of scalarization, presenting a universal relat... |
1310.8571 | Dennis Bessada | Dennis Bessada and Oswaldo D. Miranda | Probing a cosmological model with a $\Lambda = \Lambda_0 + 3\beta H^2$
decaying-vacuum | Published in Physical Review D | Phys. Rev. D 88, 083530 (2013) | 10.1103/PhysRevD.88.083530 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we study the evolution of matter-density perturbations for an
arbitrary $\Lambda(t)$ model, and specialize our analysis to the particular
phenomenological law $\Lambda = \Lambda_0 + 3\beta H^2$. We study the evolution
of the cosmic star formation rate in this particular dark energy scenario and,
by const... | [
{
"created": "Thu, 31 Oct 2013 16:14:18 GMT",
"version": "v1"
}
] | 2013-11-01 | [
[
"Bessada",
"Dennis",
""
],
[
"Miranda",
"Oswaldo D.",
""
]
] | In this work we study the evolution of matter-density perturbations for an arbitrary $\Lambda(t)$ model, and specialize our analysis to the particular phenomenological law $\Lambda = \Lambda_0 + 3\beta H^2$. We study the evolution of the cosmic star formation rate in this particular dark energy scenario and, by constra... |
gr-qc/9912049 | Carlo Ungarelli | M. Cavaglia` and C. Ungarelli | Recent developments in quantum string cosmology | 4 pages, one eps figures, uses espcrc2.sty. Talk given at the Third
Conference on Constrained Dynamics and Quantum Gravity | Nucl.Phys.Proc.Suppl. 88 (2000) 355-358 | 10.1016/S0920-5632(00)00801-X | null | gr-qc | null | In this talk we discuss the quantisation of a class of string cosmology
models characterised by scale factor duality invariance. The amplitudes for the
full set of classically allowed and forbidden transitions are computed by
applying the reduced phase space and path integral methods. In particular, the
path integral... | [
{
"created": "Mon, 13 Dec 1999 17:49:37 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Cavaglia`",
"M.",
""
],
[
"Ungarelli",
"C.",
""
]
] | In this talk we discuss the quantisation of a class of string cosmology models characterised by scale factor duality invariance. The amplitudes for the full set of classically allowed and forbidden transitions are computed by applying the reduced phase space and path integral methods. In particular, the path integral c... |
gr-qc/0501056 | Sergey Kozyrev | S.N. Andrianov, V.V. Bochkarev | Dynamic quantum theory of large additional dimensions for non-massive
particles | null | null | null | null | gr-qc | null | Brane model of universe is considered for zero-mass particle. Equation of
Wheeler - de Witt type is obtained using variation principle from the
well-known conservation laws inside the brane. This equation includes term
accounting the variation of brane topology. Solutions are obtained analytically
at some simplificat... | [
{
"created": "Wed, 19 Jan 2005 06:13:12 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Andrianov",
"S. N.",
""
],
[
"Bochkarev",
"V. V.",
""
]
] | Brane model of universe is considered for zero-mass particle. Equation of Wheeler - de Witt type is obtained using variation principle from the well-known conservation laws inside the brane. This equation includes term accounting the variation of brane topology. Solutions are obtained analytically at some simplificatio... |
1305.0695 | Marit Sandstad | Marit Sandstad, Tomi S. Koivisto and David F. Mota | Non-locality of the C- and D-theories | 9 pages, no figures | Class. Quantum Grav. 30, 155005 (2013) | 10.1088/0264-9381/30/15/155005 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Apparent similarities between non-local theories of gravity and the so-called
C-theories are pointed out. It is shown that some simple C-theories can be
mapped exactly into a previously considered type of ghost-free nonlocal
gravity. This may introduce a useful tool to tackle some infinite-order
derivative theories a... | [
{
"created": "Fri, 3 May 2013 13:17:23 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Jun 2013 13:47:02 GMT",
"version": "v2"
}
] | 2013-06-26 | [
[
"Sandstad",
"Marit",
""
],
[
"Koivisto",
"Tomi S.",
""
],
[
"Mota",
"David F.",
""
]
] | Apparent similarities between non-local theories of gravity and the so-called C-theories are pointed out. It is shown that some simple C-theories can be mapped exactly into a previously considered type of ghost-free nonlocal gravity. This may introduce a useful tool to tackle some infinite-order derivative theories and... |
1703.07556 | Stav Zalel | Fay Dowker, Stav Zalel | Evolution of Universes in Causal Set Cosmology | null | null | 10.1016/j.crhy.2017.03.002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The causal set approach to the problem of quantum gravity is based on the
hypothesis that spacetime is fundamentally discrete. Spacetime discreteness
opens the door to novel types of dynamical law for cosmology and the Classical
Sequential Growth (CSG) models of Rideout and Sorkin form an interesting class
of such la... | [
{
"created": "Wed, 22 Mar 2017 08:11:40 GMT",
"version": "v1"
}
] | 2017-03-23 | [
[
"Dowker",
"Fay",
""
],
[
"Zalel",
"Stav",
""
]
] | The causal set approach to the problem of quantum gravity is based on the hypothesis that spacetime is fundamentally discrete. Spacetime discreteness opens the door to novel types of dynamical law for cosmology and the Classical Sequential Growth (CSG) models of Rideout and Sorkin form an interesting class of such laws... |
1002.0669 | Kinjal Banerjee | Kinjal Banerjee | Some Aspects of Holst and Nieh-Yan Terms in General Relativity with
Torsion | Minor changes, References added. | Class. Quant. Grav. 27:135012,2010 | 10.1088/0264-9381/27/13/135012 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore the relation of the Holst term with the Nieh-Yan term in terms of
metric variables. We show that the Holst term indeed affects the classical
equations of motion in the presence of matter with spin. Therefore the correct
term to add to the Einstein-Hilbert action such that the equations of motion
are not af... | [
{
"created": "Wed, 3 Feb 2010 08:56:02 GMT",
"version": "v1"
},
{
"created": "Tue, 18 May 2010 08:04:47 GMT",
"version": "v2"
}
] | 2014-11-20 | [
[
"Banerjee",
"Kinjal",
""
]
] | We explore the relation of the Holst term with the Nieh-Yan term in terms of metric variables. We show that the Holst term indeed affects the classical equations of motion in the presence of matter with spin. Therefore the correct term to add to the Einstein-Hilbert action such that the equations of motion are not affe... |
0902.0093 | Christian Corda cordac | C. Corda, S. A. Ali and C. Cafaro | Interferometer Response to Scalar Gravitational Waves | Accepted for publication by Int. Journ. Mod. Phys. D. Final version | Int.J.Mod.Phys.D19:2095-2109,2010 | 10.1142/S0218271810018219 | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It was recently suggested that the magnetic component of Gravitational Waves
(GWs) is relevant in the evaluation of frequency response functions of
gravitational interferometers. In this paper we extend the analysis to the
magnetic component of the scalar mode of GWs which arise from scalar-tensor
gravity theory. In ... | [
{
"created": "Sat, 31 Jan 2009 23:40:17 GMT",
"version": "v1"
},
{
"created": "Thu, 30 Sep 2010 14:41:16 GMT",
"version": "v2"
}
] | 2010-11-15 | [
[
"Corda",
"C.",
""
],
[
"Ali",
"S. A.",
""
],
[
"Cafaro",
"C.",
""
]
] | It was recently suggested that the magnetic component of Gravitational Waves (GWs) is relevant in the evaluation of frequency response functions of gravitational interferometers. In this paper we extend the analysis to the magnetic component of the scalar mode of GWs which arise from scalar-tensor gravity theory. In th... |
1810.06507 | Ivano Dami\~ao Soares | Ivano Dami\~ao Soares | Boosted Kerr black holes in general relativity | 7 pages, 8 figures. arXiv admin note: text overlap with
arXiv:1608.01174; typing mistakes in eq.(16), eq.(19) and eq.(27) of previous
version were corrected; new version with extended manuscript and new title;
typing corrections; accepted for publication in Phys. Rev. D, April 8, 2019 | Phys. Rev. D 99, 084054 (2019) | 10.1103/PhysRevD.99.084054 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A solution of Einstein's vacuum field equation is derived that describes a
general boosted Kerr black hole relative to a Lorentz frame at future null
infinity. The metric contains five independent parameters -- mass $m$, rotation
$\omega$, boost parameter $v/c$ and the boost direction defined by
$(n_1,n_2,n_3)$ satis... | [
{
"created": "Mon, 15 Oct 2018 16:40:25 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Oct 2018 14:57:30 GMT",
"version": "v2"
},
{
"created": "Tue, 22 Jan 2019 16:31:27 GMT",
"version": "v3"
},
{
"created": "Tue, 5 Feb 2019 14:25:53 GMT",
"version": "v4"
},
{
"cr... | 2019-05-08 | [
[
"Soares",
"Ivano Damião",
""
]
] | A solution of Einstein's vacuum field equation is derived that describes a general boosted Kerr black hole relative to a Lorentz frame at future null infinity. The metric contains five independent parameters -- mass $m$, rotation $\omega$, boost parameter $v/c$ and the boost direction defined by $(n_1,n_2,n_3)$ satisfy... |
2201.00648 | Hajime Sotani | Hajime Sotani and Akira Dohi | Gravitational wave asteroseismology on cooling neutron stars | accepted for publication in PRD | null | 10.1103/PhysRevD.105.023007 | RIKEN-iTHEMS-Report-22 | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | We examine the gravitational wave frequencies from neutron stars during
thermal evolution, adopting the relativistic Cowling approximation. We
particularly focus on the neutron star models, in which the direct Urca (rapid
cooling process) does not work, without the superfluidity and
superconductivity. For such models... | [
{
"created": "Thu, 30 Dec 2021 08:15:36 GMT",
"version": "v1"
}
] | 2022-01-19 | [
[
"Sotani",
"Hajime",
""
],
[
"Dohi",
"Akira",
""
]
] | We examine the gravitational wave frequencies from neutron stars during thermal evolution, adopting the relativistic Cowling approximation. We particularly focus on the neutron star models, in which the direct Urca (rapid cooling process) does not work, without the superfluidity and superconductivity. For such models, ... |
1304.4089 | Vasilis Oikonomou | V. K. Oikonomou | An Exponential F(R) Dark Energy Model | similar to journal version, new important references added | null | 10.1007/s10714-013-1597-7 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present an exponential $F(R)$ modified gravity model in the Jordan and the
Einstein frame. We use a general approach in order to investigate and
demonstrate the viability of the model. Apart from the general features that
this models has, which actually render it viable at a first step, we address
the issues of fi... | [
{
"created": "Mon, 15 Apr 2013 13:21:04 GMT",
"version": "v1"
},
{
"created": "Thu, 29 Aug 2013 12:24:44 GMT",
"version": "v2"
}
] | 2015-06-15 | [
[
"Oikonomou",
"V. K.",
""
]
] | We present an exponential $F(R)$ modified gravity model in the Jordan and the Einstein frame. We use a general approach in order to investigate and demonstrate the viability of the model. Apart from the general features that this models has, which actually render it viable at a first step, we address the issues of fini... |
1812.06112 | Carlos Villalpando | Carlos Villalpando, Sujoy K. Modak | Minimal length effect on the broadening of free wave-packets and its
physical implications | v4, 34 pages, 7 figures - matches published version in PRD | Phys. Rev. D 100, 024054 (2019) | 10.1103/PhysRevD.100.024054 | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the Generalized Uncertainty Principle (GUP) modified time evolution
for the width of wave-packets for a scalar potential. Free particle case is
solved exactly where the wave-packet broadening is modified by a coupling
between the GUP parameter and higher order moments in the probability
distribution in momen... | [
{
"created": "Fri, 14 Dec 2018 19:07:54 GMT",
"version": "v1"
},
{
"created": "Sat, 26 Jan 2019 04:22:35 GMT",
"version": "v2"
},
{
"created": "Sat, 11 May 2019 22:12:36 GMT",
"version": "v3"
},
{
"created": "Tue, 6 Aug 2019 15:23:43 GMT",
"version": "v4"
}
] | 2019-08-07 | [
[
"Villalpando",
"Carlos",
""
],
[
"Modak",
"Sujoy K.",
""
]
] | We study the Generalized Uncertainty Principle (GUP) modified time evolution for the width of wave-packets for a scalar potential. Free particle case is solved exactly where the wave-packet broadening is modified by a coupling between the GUP parameter and higher order moments in the probability distribution in momentu... |
2202.11252 | Gerardo Vel\'azquez-Rodr\'iguez | Abigail \'Alvarez, Mois\'es Bravo-Gaete, Mar\'ia Montserrat
Ju\'arez-Aubry and Gerardo Vel\'azquez Rodr\'iguez | Thermodynamics of non-linearly charged Anti-de Sitter black holes in
four-dimensional Critical Gravity | null | null | 10.1103/PhysRevD.105.084032 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we provide new examples of Anti-de Sitter black holes with a
planar base manifold in four-dimensional Critical Gravity by considering
nonlinear electrodynamics as a matter source. We find a general solution
characterized by the presence of only one integration constant where, for a
suitable election of ... | [
{
"created": "Wed, 23 Feb 2022 00:51:09 GMT",
"version": "v1"
},
{
"created": "Sat, 9 Apr 2022 00:09:38 GMT",
"version": "v2"
}
] | 2022-05-04 | [
[
"Álvarez",
"Abigail",
""
],
[
"Bravo-Gaete",
"Moisés",
""
],
[
"Juárez-Aubry",
"María Montserrat",
""
],
[
"Rodríguez",
"Gerardo Velázquez",
""
]
] | In this work, we provide new examples of Anti-de Sitter black holes with a planar base manifold in four-dimensional Critical Gravity by considering nonlinear electrodynamics as a matter source. We find a general solution characterized by the presence of only one integration constant where, for a suitable election of co... |
1309.0693 | Sumanta Chakraborty | Sumanta Chakraborty | Constraining Alternative Gravity Theories Using The Solar Neutrino
Problem | 21 pages, 6 figures, 3 tables; Mathches Published Version | Class. Quantum. Grav 31 (2014) 055005 | 10.1088/0264-9381/31/5/055005 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The neutrino flavor oscillation is studied in some classes of alternative
gravity theories in a plane specified by $\theta =\pi /2$, exploiting the
spherical symmetry and general equations for oscillation phases are given. We
first calculate the phase in a general static spherically symmetric model and
then we discus... | [
{
"created": "Mon, 2 Sep 2013 03:39:13 GMT",
"version": "v1"
},
{
"created": "Thu, 13 Mar 2014 05:11:03 GMT",
"version": "v2"
}
] | 2014-03-14 | [
[
"Chakraborty",
"Sumanta",
""
]
] | The neutrino flavor oscillation is studied in some classes of alternative gravity theories in a plane specified by $\theta =\pi /2$, exploiting the spherical symmetry and general equations for oscillation phases are given. We first calculate the phase in a general static spherically symmetric model and then we discuss ... |
1810.09188 | Thomas Buchert | Thomas Buchert | Is Dark Energy Simulated by Structure Formation in the Universe ? | 7 pages + cover page. Talk presented at 2nd World Summit on Exploring
the Dark Side of the Universe, 25-29 June 2018, University of Antilles,
Guadeloupe; matches accepted version | PoS(EDSU2018)038 | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The standard model of cosmology assumes that the Universe can be described to
hover around a homogeneous-isotropic solution of Einstein's general theory of
relativity. This description needs (sometimes hidden) hypotheses that restrict
the generality, and relaxing these restrictions is the headline of a new
physical a... | [
{
"created": "Mon, 22 Oct 2018 11:39:28 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Nov 2018 12:02:25 GMT",
"version": "v2"
}
] | 2018-12-21 | [
[
"Buchert",
"Thomas",
""
]
] | The standard model of cosmology assumes that the Universe can be described to hover around a homogeneous-isotropic solution of Einstein's general theory of relativity. This description needs (sometimes hidden) hypotheses that restrict the generality, and relaxing these restrictions is the headline of a new physical app... |
1403.0449 | Meng-Sen Ma | Meng-Sen Ma, Fang Liu, Ren Zhao | Continuous phase transition and critical behaviors of 3D black hole with
torsion | 15 pages, 5 figures. arXiv admin note: text overlap with
arXiv:1310.1491 | Class. Quantum Grav. 31(2014) 095001 | 10.1088/0264-9381/31/9/095001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the phase transition and the critical behavior of the BTZ black hole
with torsion obtained in $(1+2)$-dimensional Poincar\'{e} gauge theory.
According to Ehrenfest's classification, when the parameters in the theory are
arranged properly the BTZ black hole with torsion may posses the second order
phase trans... | [
{
"created": "Mon, 3 Mar 2014 14:46:29 GMT",
"version": "v1"
}
] | 2014-04-10 | [
[
"Ma",
"Meng-Sen",
""
],
[
"Liu",
"Fang",
""
],
[
"Zhao",
"Ren",
""
]
] | We study the phase transition and the critical behavior of the BTZ black hole with torsion obtained in $(1+2)$-dimensional Poincar\'{e} gauge theory. According to Ehrenfest's classification, when the parameters in the theory are arranged properly the BTZ black hole with torsion may posses the second order phase transit... |
2312.09549 | \"Ozcan Sert | \"Ozcan Sert | Wormholes in the Non-minimally Coupled Gravity with Electromagnetism | 23 pages | Nucl. Phys. B 1006 (2024) 116651 | 10.1016/j.nuclphysb.2024.116651 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | Since the general relativistic approach requires exotic matter with negative
energy density, constructing wormholes containing realistic matter is a crucial
challenge. Therefore, extending General Relativity to non-minimal cases may be
an alternative option. In this paper, we investigate wormholes which are
supported... | [
{
"created": "Fri, 15 Dec 2023 06:02:02 GMT",
"version": "v1"
},
{
"created": "Thu, 16 May 2024 19:06:40 GMT",
"version": "v2"
},
{
"created": "Tue, 13 Aug 2024 20:22:53 GMT",
"version": "v3"
}
] | 2024-08-15 | [
[
"Sert",
"Özcan",
""
]
] | Since the general relativistic approach requires exotic matter with negative energy density, constructing wormholes containing realistic matter is a crucial challenge. Therefore, extending General Relativity to non-minimal cases may be an alternative option. In this paper, we investigate wormholes which are supported b... |
2109.04450 | Shafqat Ul Islam | Jitendra Kumar, Shafqat Ul Islam, Sushant G. Ghosh | Investigating strong gravitational lensing effects by suppermassive
black holes with Horndeski gravity | 12 pages, 8 figures, 7 tables, title of the paper changed and some
typos in the text corrected | null | 10.1140/epjc/s10052-022-10357-2 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We study gravitational lensing in strong-field limit by a static spherically
symmetric black hole in quartic scalar field Horndeski gravity having
additional hair parameter $q$, evading the no-hair theorem. We find an increase
in the deflection angle $\alpha_D$, photon sphere radius $x_{ps}$, and angular
position $\t... | [
{
"created": "Thu, 9 Sep 2021 17:49:26 GMT",
"version": "v1"
},
{
"created": "Thu, 28 Oct 2021 13:52:28 GMT",
"version": "v2"
}
] | 2022-06-01 | [
[
"Kumar",
"Jitendra",
""
],
[
"Islam",
"Shafqat Ul",
""
],
[
"Ghosh",
"Sushant G.",
""
]
] | We study gravitational lensing in strong-field limit by a static spherically symmetric black hole in quartic scalar field Horndeski gravity having additional hair parameter $q$, evading the no-hair theorem. We find an increase in the deflection angle $\alpha_D$, photon sphere radius $x_{ps}$, and angular position $\the... |
2404.11910 | Chao Zhang | Chao Zhang and Ryotaro Kase | Even-parity stability of hairy black holes in $U(1)$ gauge-invariant
scalar-vector-tensor theories | 30 pages, 4 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The $U(1)$ gauge-invariant scalar-vector-tensor theories, which catches five
degrees of freedom, are valuable for its implications to inflation problems,
generation of primordial magnetic fields, new black hole (BH) and neutron star
solutions, etc. In this paper, we derive conditions for the absence of ghosts
and Lap... | [
{
"created": "Thu, 18 Apr 2024 05:22:40 GMT",
"version": "v1"
},
{
"created": "Fri, 26 Apr 2024 14:00:10 GMT",
"version": "v2"
}
] | 2024-04-29 | [
[
"Zhang",
"Chao",
""
],
[
"Kase",
"Ryotaro",
""
]
] | The $U(1)$ gauge-invariant scalar-vector-tensor theories, which catches five degrees of freedom, are valuable for its implications to inflation problems, generation of primordial magnetic fields, new black hole (BH) and neutron star solutions, etc. In this paper, we derive conditions for the absence of ghosts and Lapla... |
gr-qc/0311001 | Merced Montesinos | Merced Montesinos | The double role of Einstein's equations: as equations of motion and as
vanishing energy-momentum tensor | 7 pages, no figures, latex file. Contribution to the meeting in honor
of Plebanski. Any comments on this issue are welcome | null | null | null | gr-qc hep-th physics.class-ph | null | Diffeomorphism covariant theories with dynamical background metric, like
gravity coupled to matter fields in the way expressed by Einstein-Hilbert's
action or relativistic strings described by Polyakov's action, have `on-shell'
vanishing energy-momentum tensor $t_{\mu\nu}$ because $t_{\mu\nu}$ is,
essentially, the Eu... | [
{
"created": "Fri, 31 Oct 2003 22:22:29 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Montesinos",
"Merced",
""
]
] | Diffeomorphism covariant theories with dynamical background metric, like gravity coupled to matter fields in the way expressed by Einstein-Hilbert's action or relativistic strings described by Polyakov's action, have `on-shell' vanishing energy-momentum tensor $t_{\mu\nu}$ because $t_{\mu\nu}$ is, essentially, the Eule... |
2310.18022 | Sudipta Sarkar | Kabir Chakravarti, Rajes Ghosh, and Sudipta Sarkar | Formation and Stability of Area Quantized Black Holes | 8 pages, 6 figures, numerical codes will be made available upon
request | Phys.Rev.D 109 (2024) 4, 046001 | 10.1103/PhysRevD.109.046001 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the ergoregion instability of area-quantized rotating quantum
black holes (QBH) under gravitational perturbation. We show that the
instability can be avoided in binary systems that include QBHs if the
separation between the inspiralling components at the onset of black hole
formation is less than a cri... | [
{
"created": "Fri, 27 Oct 2023 09:58:40 GMT",
"version": "v1"
}
] | 2024-06-14 | [
[
"Chakravarti",
"Kabir",
""
],
[
"Ghosh",
"Rajes",
""
],
[
"Sarkar",
"Sudipta",
""
]
] | We investigate the ergoregion instability of area-quantized rotating quantum black holes (QBH) under gravitational perturbation. We show that the instability can be avoided in binary systems that include QBHs if the separation between the inspiralling components at the onset of black hole formation is less than a criti... |
gr-qc/9807019 | H. M. Antia | H. M. Antia (Tata Institute of Fundamental Research, Mumbai) | Can Naked Singularities Yield Gamma Ray Bursts? | 4 pages, TeX, no figures | Gen.Rel.Grav. 31 (1999) 1675-1680 | 10.1023/A:1026758015746 | null | gr-qc astro-ph | null | Gamma-ray bursts are believed to be the most luminous objects in the
Universe. There has been some suggestion that these arise from quantum
processes around naked singularities. The main problem with this suggestion is
that all known examples of naked singularities are massless and hence there is
effectively no sourc... | [
{
"created": "Thu, 9 Jul 1998 10:12:08 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Antia",
"H. M.",
"",
"Tata Institute of Fundamental Research, Mumbai"
]
] | Gamma-ray bursts are believed to be the most luminous objects in the Universe. There has been some suggestion that these arise from quantum processes around naked singularities. The main problem with this suggestion is that all known examples of naked singularities are massless and hence there is effectively no source ... |
2204.13837 | Shinji Tsujikawa | Masato Minamitsuji, Kazufumi Takahashi, Shinji Tsujikawa | Linear stability of black holes with static scalar hair in full
Horndeski theories: generic instabilities and surviving models | 29 pages, no figures | Phys. Rev. D 106, 044003 (2022) | 10.1103/PhysRevD.106.044003 | YITP-22-41, WUAP-22-03 | gr-qc astro-ph.CO hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | In full Horndeski theories, we show that the static and spherically symmetric
black hole (BH) solutions with a static scalar field~$\phi$ whose kinetic
term~$X$ is nonvanishing on the BH horizon are generically prone to
ghost/Laplacian instabilities. We then search for asymptotically Minkowski
hairy BH solutions with... | [
{
"created": "Fri, 29 Apr 2022 00:45:41 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Aug 2022 12:46:30 GMT",
"version": "v2"
}
] | 2022-08-03 | [
[
"Minamitsuji",
"Masato",
""
],
[
"Takahashi",
"Kazufumi",
""
],
[
"Tsujikawa",
"Shinji",
""
]
] | In full Horndeski theories, we show that the static and spherically symmetric black hole (BH) solutions with a static scalar field~$\phi$ whose kinetic term~$X$ is nonvanishing on the BH horizon are generically prone to ghost/Laplacian instabilities. We then search for asymptotically Minkowski hairy BH solutions with a... |
gr-qc/0701056 | Mariusz Dabrowski P. | Mariusz P. Dabrowski and Adam Balcerzak | Big-Rip, Sudden Future, and other exotic singularities in the universe | 3 pages, MG11 proceedings contribution | null | 10.1142/9789812834300_0321 | null | gr-qc astro-ph hep-th | null | We discuss exotic singularities in the evolution of the universe motivated by
the progress of observations in cosmology. Among them there are: Big-Rip (BR),
Sudden Future Singularities (SFS), Generalized Sudden Future Singularities
(GSFS), Finite Density Singularities (FD), type III, and type IV singularities.
We rel... | [
{
"created": "Wed, 10 Jan 2007 09:54:44 GMT",
"version": "v1"
}
] | 2016-11-15 | [
[
"Dabrowski",
"Mariusz P.",
""
],
[
"Balcerzak",
"Adam",
""
]
] | We discuss exotic singularities in the evolution of the universe motivated by the progress of observations in cosmology. Among them there are: Big-Rip (BR), Sudden Future Singularities (SFS), Generalized Sudden Future Singularities (GSFS), Finite Density Singularities (FD), type III, and type IV singularities. We relat... |
gr-qc/9911100 | Mauricio Bellini | Mauricio Bellini (UNMdP), Pablo D. Sisterna (UNMdP) and Roberto R.
Deza (UNMdP) | Quantally fed steady-state domain distributions in Stochastic Inflation | 10 pages, 1 figure, accepted for publication to Il Nuovo Cimento B | Nuovo Cim. B115 (2000) 239-244 | null | null | gr-qc | null | Within the framework of stochastic inflationary cosmology we derive
steady-state distributions P_c(V) of domains in comoving coordinates, under the
assumption of slow-rolling and for two specific choices of the coarse-grained
inflaton potential $V(\Phi)$. We model the process as a Starobinsky-like
equation in V-space... | [
{
"created": "Thu, 25 Nov 1999 16:16:46 GMT",
"version": "v1"
}
] | 2016-08-31 | [
[
"Bellini",
"Mauricio",
"",
"UNMdP"
],
[
"Sisterna",
"Pablo D.",
"",
"UNMdP"
],
[
"Deza",
"Roberto R.",
"",
"UNMdP"
]
] | Within the framework of stochastic inflationary cosmology we derive steady-state distributions P_c(V) of domains in comoving coordinates, under the assumption of slow-rolling and for two specific choices of the coarse-grained inflaton potential $V(\Phi)$. We model the process as a Starobinsky-like equation in V-space p... |
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