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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1606.09430 | Georgios Lukes Gerakopoulos | Georgios Lukes-Gerakopoulos | Spinning particles moving around black holes: integrability and chaos | 6 pages, 2 figures, to appear in the Proceedings of the "14th Marcel
Grossmann Meeting" (Rome, July 12 - 18, 2015) | null | 10.1142/9789813226609_0209 | null | gr-qc nlin.CD | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The motion of a stellar compact object around a supermassive black hole can
be approximated by the motion of a spinning test particle. The equations of
motion describing such systems are in general non-integrable, and therefore,
chaotic motion should be expected. This article discusses the integrability
issue of the ... | [
{
"created": "Thu, 30 Jun 2016 11:05:02 GMT",
"version": "v1"
}
] | 2019-03-06 | [
[
"Lukes-Gerakopoulos",
"Georgios",
""
]
] | The motion of a stellar compact object around a supermassive black hole can be approximated by the motion of a spinning test particle. The equations of motion describing such systems are in general non-integrable, and therefore, chaotic motion should be expected. This article discusses the integrability issue of the sp... |
0906.5067 | Ahmadjon Abdujabbarov | A.I. Mamadjanov, A.A. Hakimov, S.R. Tojiev | Quantum Interference Effects in Spacetime of Slowly Rotating Compact
Objects in Braneworld | 12 pages, 2 figures | Mod.Phys.Lett.A25:243-256,2010 | 10.1142/S0217732310032482 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The phase shift a neutron interferometer caused by the gravitational field
and the rotation of the earth is derived in a unified way from the standpoint
of general relativity. General relativistic quantum interference effects in the
slowly rotating braneworld as the Sagnac effect and phase shift effect of
interfering... | [
{
"created": "Sat, 27 Jun 2009 11:05:13 GMT",
"version": "v1"
}
] | 2010-03-02 | [
[
"Mamadjanov",
"A. I.",
""
],
[
"Hakimov",
"A. A.",
""
],
[
"Tojiev",
"S. R.",
""
]
] | The phase shift a neutron interferometer caused by the gravitational field and the rotation of the earth is derived in a unified way from the standpoint of general relativity. General relativistic quantum interference effects in the slowly rotating braneworld as the Sagnac effect and phase shift effect of interfering p... |
gr-qc/0312119 | Miguel Lorente | M. Lorente | Quantum process and the foundation of relational theories of space-time | Proceedings: J. Diaz Alonso, M. Lorente eds. (Frontieres, Paris 1994)
pp. 297-302. LaTeX, 6 pages, 1 eps figure (late submission) | null | null | null | gr-qc | null | We present current theories about the structure of space and time, where the
building blocks are some fundamental entities (yes-no experiment, quantum
processes, spin net-work, preparticles) that do not presuppose the existence of
space and time. The relations among these objects are the base for a
pregeometry of dis... | [
{
"created": "Tue, 30 Dec 2003 11:10:35 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Lorente",
"M.",
""
]
] | We present current theories about the structure of space and time, where the building blocks are some fundamental entities (yes-no experiment, quantum processes, spin net-work, preparticles) that do not presuppose the existence of space and time. The relations among these objects are the base for a pregeometry of discr... |
2211.01807 | Muhammad Sharif | M. Sharif and Komal Hassan | Influence of Charge on Decoupled Anisotropic Spheres in $f(G,T)$ Gravity | 33 pages, 10 figures | Eur. Phys. J. Plus 137(2022)997 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we develop two anisotropic solutions for static
self-gravitating spherical structure in the presence of electromagnetic field
through gravitational decoupling approach in $f(G,T)$ theory, where $G$ and $T$
denote the Gauss-Bonnet term and trace of the energy-momentum tensor,
respectively. The extra sou... | [
{
"created": "Wed, 2 Nov 2022 02:47:24 GMT",
"version": "v1"
}
] | 2022-11-04 | [
[
"Sharif",
"M.",
""
],
[
"Hassan",
"Komal",
""
]
] | In this paper, we develop two anisotropic solutions for static self-gravitating spherical structure in the presence of electromagnetic field through gravitational decoupling approach in $f(G,T)$ theory, where $G$ and $T$ denote the Gauss-Bonnet term and trace of the energy-momentum tensor, respectively. The extra sourc... |
1012.3173 | Ulrich Sperhake | Ulrich Sperhake, Bernd Bruegmann, Doreen Mueller, Carlos F. Sopuerta | Black-hole binaries go to eleven orbits | Matches version to be published in CQG, 16 pages, 8 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyse an eleven-orbit inspiral of a non-spinning black-hole binary with
mass ratio q=M1/M2=4. The numerically obtained gravitational waveforms are
compared with post-Newtonian (PN) predictions including several sub-dominant
multipoles up to multipolar indices (l=5,m=5). We find that (i) numerical and
post-Newton... | [
{
"created": "Tue, 14 Dec 2010 21:05:18 GMT",
"version": "v1"
},
{
"created": "Tue, 7 Jun 2011 11:53:07 GMT",
"version": "v2"
}
] | 2011-06-08 | [
[
"Sperhake",
"Ulrich",
""
],
[
"Bruegmann",
"Bernd",
""
],
[
"Mueller",
"Doreen",
""
],
[
"Sopuerta",
"Carlos F.",
""
]
] | We analyse an eleven-orbit inspiral of a non-spinning black-hole binary with mass ratio q=M1/M2=4. The numerically obtained gravitational waveforms are compared with post-Newtonian (PN) predictions including several sub-dominant multipoles up to multipolar indices (l=5,m=5). We find that (i) numerical and post-Newtonia... |
0901.0278 | Gon\c{c}alo Dias | Gon\c{c}alo A. S. Dias and Jos\'e P. S. Lemos | Hamiltonian thermodynamics of d-dimensional (d=4 and d>4)
Reissner-Nordstr\"om anti-de Sitter black holes with spherical, planar, and
hyperbolic topology | 24 pages, 3 figures, published version | Phys.Rev.D79:044013,2009 | 10.1103/PhysRevD.79.044013 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Hamiltonian thermodynamics formalism is applied to the general
$d$-dimensional Reissner-Nordstr\"om-anti-de Sitter black hole with spherical,
planar, and hyperbolic horizon topology. After writing its action and
performing a Legendre transformation, surface terms are added in order to
guarantee a well defined var... | [
{
"created": "Fri, 2 Jan 2009 20:36:39 GMT",
"version": "v1"
},
{
"created": "Tue, 6 Jan 2009 22:19:00 GMT",
"version": "v2"
},
{
"created": "Sat, 23 May 2009 20:29:11 GMT",
"version": "v3"
}
] | 2009-11-13 | [
[
"Dias",
"Gonçalo A. S.",
""
],
[
"Lemos",
"José P. S.",
""
]
] | The Hamiltonian thermodynamics formalism is applied to the general $d$-dimensional Reissner-Nordstr\"om-anti-de Sitter black hole with spherical, planar, and hyperbolic horizon topology. After writing its action and performing a Legendre transformation, surface terms are added in order to guarantee a well defined varia... |
0710.0999 | Julio Cesar Fabris | A.B. Batista, J.C. Fabris, M. J. S. Houndjo | Particle Production in an expanding universe dominated by dark energy
fluid | Latex file, 14 pages, 1 figure in EPS format | Grav.Cosmol.14:140-146,2008 | 10.1134/S0202289308020035 | null | gr-qc astro-ph hep-th | null | We investigate the fate of particle production in an expanding universe
dominated by a perfect fluid with equation of state $p = \alpha\rho$. The rate
of particle production, using the Bogolioubov coefficients, are determined
exactly for any value of $\alpha$ in the case of a flat universe. When the
strong energy con... | [
{
"created": "Thu, 4 Oct 2007 12:49:14 GMT",
"version": "v1"
}
] | 2012-07-06 | [
[
"Batista",
"A. B.",
""
],
[
"Fabris",
"J. C.",
""
],
[
"Houndjo",
"M. J. S.",
""
]
] | We investigate the fate of particle production in an expanding universe dominated by a perfect fluid with equation of state $p = \alpha\rho$. The rate of particle production, using the Bogolioubov coefficients, are determined exactly for any value of $\alpha$ in the case of a flat universe. When the strong energy condi... |
gr-qc/9801009 | Eugenio Mello | E. R. Bezerra de Mello, V. B. Bezerra and Yu. V. Grats | Self-forces in the Spacetime of Multiple Cosmic Strings | This paper has been produced in Latex format and has 18 pages | Class.Quant.Grav. 15 (1998) 1915-1925 | 10.1088/0264-9381/15/7/009 | null | gr-qc | null | We calculate the electromagnetic self-force on a stationary linear
distribution of four-current in the spacetime of multiple cosmic strings. It is
shown that if the current is infinitely thin and stretched along a line which
is parallel to the strings the problem admits an explicit solution.
| [
{
"created": "Tue, 6 Jan 1998 11:32:19 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"de Mello",
"E. R. Bezerra",
""
],
[
"Bezerra",
"V. B.",
""
],
[
"Grats",
"Yu. V.",
""
]
] | We calculate the electromagnetic self-force on a stationary linear distribution of four-current in the spacetime of multiple cosmic strings. It is shown that if the current is infinitely thin and stretched along a line which is parallel to the strings the problem admits an explicit solution. |
1811.11912 | Fabio Novaes | F\'abio Novaes, C\'assio Marinho, M\'at\'e Lencs\'es and Marc Casals | Kerr-de Sitter Quasinormal Modes via Accessory Parameter Expansion | 38+19 pages, 8 figures. v3: minor changes, matches published version | JHEP 1905 (2019) 033 | 10.1007/JHEP05(2019)033 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quasinormal modes are characteristic oscillatory modes that control the
relaxation of a perturbed physical system back to its equilibrium state. In
this work, we calculate QNM frequencies and angular eigenvalues of Kerr--de
Sitter black holes using a novel method based on conformal field theory. The
spin-field pertur... | [
{
"created": "Thu, 29 Nov 2018 01:45:52 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Feb 2019 18:20:08 GMT",
"version": "v2"
},
{
"created": "Thu, 9 May 2019 00:30:49 GMT",
"version": "v3"
}
] | 2019-05-10 | [
[
"Novaes",
"Fábio",
""
],
[
"Marinho",
"Cássio",
""
],
[
"Lencsés",
"Máté",
""
],
[
"Casals",
"Marc",
""
]
] | Quasinormal modes are characteristic oscillatory modes that control the relaxation of a perturbed physical system back to its equilibrium state. In this work, we calculate QNM frequencies and angular eigenvalues of Kerr--de Sitter black holes using a novel method based on conformal field theory. The spin-field perturba... |
1003.3491 | Leonardo Castaneda | Diego Caceres, Leonardo Castaneda, Juan M. Tejeiro | Shear Dynamics in Bianchi I Cosmology | 10 pages, 6 figures, Comments and suggestions are welcome. | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the exact equation for evolution of Bianchi I cosmological model,
considering a non-tilted perfect fluid in a matter dominated universe. We use
the definition of shear tensor and later we prove it is consistent with the
evolution equation for shear tensor obtained from Ricci identities and widely
known in ... | [
{
"created": "Wed, 17 Mar 2010 23:06:01 GMT",
"version": "v1"
}
] | 2010-03-19 | [
[
"Caceres",
"Diego",
""
],
[
"Castaneda",
"Leonardo",
""
],
[
"Tejeiro",
"Juan M.",
""
]
] | We present the exact equation for evolution of Bianchi I cosmological model, considering a non-tilted perfect fluid in a matter dominated universe. We use the definition of shear tensor and later we prove it is consistent with the evolution equation for shear tensor obtained from Ricci identities and widely known in li... |
1504.04079 | Grigorios Fournodavlos | Grigorios Fournodavlos | On the backward stability of the Schwarzschild black hole singularity | 6 Figures | null | 10.1007/s00220-016-2681-0 | null | gr-qc math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the backwards-in-time stability of the Schwarzschild singularity
from a dynamical PDE point of view. More precisely, considering a spacelike
hypersurface $\Sigma_0$ in the interior of the black hole region, tangent to
the singular hypersurface $\{r=0\}$ at a single sphere, we study the problem of
perturbing ... | [
{
"created": "Thu, 16 Apr 2015 01:32:38 GMT",
"version": "v1"
}
] | 2016-07-20 | [
[
"Fournodavlos",
"Grigorios",
""
]
] | We study the backwards-in-time stability of the Schwarzschild singularity from a dynamical PDE point of view. More precisely, considering a spacelike hypersurface $\Sigma_0$ in the interior of the black hole region, tangent to the singular hypersurface $\{r=0\}$ at a single sphere, we study the problem of perturbing th... |
1108.5561 | Paul Romatschke | Paul Romatschke | Relativistic (Lattice) Boltzmann Equation with Non-Ideal Equation of
State | 19 pages, 4 figures; v2: new section IVB on shear and bulk
viscosities & changes reflecting referee's comments | null | 10.1103/PhysRevD.85.065012 | null | gr-qc hep-th nucl-th physics.flu-dyn | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The relativistic Boltzmann equation for a single particle species generally
implies a fixed, unchangeable equation of state that corresponds to that of an
ideal gas. Real-world systems typically have more complicated equation of state
which cannot be described by the Boltzmann equation. The present work derives a
'Bo... | [
{
"created": "Mon, 29 Aug 2011 14:21:55 GMT",
"version": "v1"
},
{
"created": "Fri, 24 Feb 2012 00:23:00 GMT",
"version": "v2"
}
] | 2013-05-30 | [
[
"Romatschke",
"Paul",
""
]
] | The relativistic Boltzmann equation for a single particle species generally implies a fixed, unchangeable equation of state that corresponds to that of an ideal gas. Real-world systems typically have more complicated equation of state which cannot be described by the Boltzmann equation. The present work derives a 'Bolt... |
gr-qc/0004022 | Elizabeth Winstanley | Adrian C. Ottewill (University College Dublin) and Elizabeth
Winstanley (Oxford University) | The renormalized stress tensor in Kerr space-time: general results | 24 pages, no figures, revtex, minor changes to conclusions | Phys.Rev. D62 (2000) 084018 | 10.1103/PhysRevD.62.084018 | OUTP-99-53P | gr-qc | null | We derive constraints on the form of the renormalized stress tensor for
states on Kerr space-time based on general physical principles: symmetry, the
conservation equations, the trace anomaly and regularity on (sections of) the
event horizon. This is then applied to the physical vacua of interest. We
introduce the co... | [
{
"created": "Fri, 7 Apr 2000 15:27:32 GMT",
"version": "v1"
},
{
"created": "Tue, 20 Jun 2000 15:28:48 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Ottewill",
"Adrian C.",
"",
"University College Dublin"
],
[
"Winstanley",
"Elizabeth",
"",
"Oxford University"
]
] | We derive constraints on the form of the renormalized stress tensor for states on Kerr space-time based on general physical principles: symmetry, the conservation equations, the trace anomaly and regularity on (sections of) the event horizon. This is then applied to the physical vacua of interest. We introduce the conc... |
gr-qc/0112060 | Petr Hajicek | P. Hajicek and I. Kouletsis (University of Berne) | Pair of null gravitating shells I. Space of solutions and its symmetries | 28 pages, 9 figure included in the text, Latex file using amstex,
epic and graphic | Class.Quant.Grav. 19 (2002) 2529-2550 | 10.1088/0264-9381/19/10/302 | BUTP-01/24 | gr-qc | null | The dynamical system constituted by two spherically symmetric thin shells and
their own gravitational field is studied. The shells can be distinguished from
each other, and they can intersect. At each intersection, they exchange energy
on the Dray, 't Hooft and Redmount formula. There are bound states: if the
shells ... | [
{
"created": "Sat, 22 Dec 2001 10:51:08 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Hajicek",
"P.",
"",
"University of Berne"
],
[
"Kouletsis",
"I.",
"",
"University of Berne"
]
] | The dynamical system constituted by two spherically symmetric thin shells and their own gravitational field is studied. The shells can be distinguished from each other, and they can intersect. At each intersection, they exchange energy on the Dray, 't Hooft and Redmount formula. There are bound states: if the shells in... |
2003.05139 | Semin Xavier | Semin Xavier, Jose Mathew and S. Shankaranarayanan | Infinitely degenerate exact Ricci-flat solutions in f(R) gravity | v2: 15 pages, 1 figure, changed title, added an appendix, accepted in
Classical and Quantum Gravity | null | 10.1088/1361-6382/abbd0f | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain an infinite number of exact static, Ricci-flat spherically
symmetric vacuum solutions for a class of f(R) theories of gravity. We
analytically derive two exact vacuum black-hole solutions for the same class of
f(R) theories. The two black-hole solutions have the event-horizon at the same
point; however, the... | [
{
"created": "Wed, 11 Mar 2020 07:22:48 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Sep 2020 16:15:11 GMT",
"version": "v2"
}
] | 2020-10-02 | [
[
"Xavier",
"Semin",
""
],
[
"Mathew",
"Jose",
""
],
[
"Shankaranarayanan",
"S.",
""
]
] | We obtain an infinite number of exact static, Ricci-flat spherically symmetric vacuum solutions for a class of f(R) theories of gravity. We analytically derive two exact vacuum black-hole solutions for the same class of f(R) theories. The two black-hole solutions have the event-horizon at the same point; however, their... |
2308.16044 | Maria Petronikolou | Maria Petronikolou, Emmanuel N. Saridakis | Alleviating $H_0$ tension in scalar-tensor and bi-scalar-tensor theories | 20 pages, 4 figures, Invited Contribution to Universe Special Issue
"Modified Gravity Approaches to the Tensions of LambdaCDM", with Editors
Eleonora Di Valentino, Leandros Perivolaropoulos, Jackson Levi Said | Universe 2023, 9(9), 397; | 10.3390/universe9090397 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate scalar-tensor and bi-scalar-tensor modified theories of
gravity that can alleviate the $H_0$ tension. In the first class of theories we
show that choosing particular models with shift-symmetric friction term we are
able to alleviate the tension by obtaining smaller effective Newton's constant
at interm... | [
{
"created": "Wed, 30 Aug 2023 14:06:37 GMT",
"version": "v1"
}
] | 2023-08-31 | [
[
"Petronikolou",
"Maria",
""
],
[
"Saridakis",
"Emmanuel N.",
""
]
] | We investigate scalar-tensor and bi-scalar-tensor modified theories of gravity that can alleviate the $H_0$ tension. In the first class of theories we show that choosing particular models with shift-symmetric friction term we are able to alleviate the tension by obtaining smaller effective Newton's constant at intermed... |
1610.07467 | Suddhasattwa Brahma | Jibril Ben Achour, Suddhasattwa Brahma, Julien Grain and Antonino
Marciano | A new look at scalar perturbations in loop quantum cosmology:
(un)deformed algebra approach using self dual variables | 26 pages | null | null | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Scalar cosmological perturbations in loop quantum cosmology (LQC) is
revisited in a covariant manner, using self dual Ashtekar variables. For
real-valued Ashtekar-Barbero variables, this `deformed algebra' approach has
been shown to implement holonomy corrections from loop quantum gravity (LQG) in
a consistent manner... | [
{
"created": "Mon, 24 Oct 2016 16:03:30 GMT",
"version": "v1"
}
] | 2016-10-25 | [
[
"Achour",
"Jibril Ben",
""
],
[
"Brahma",
"Suddhasattwa",
""
],
[
"Grain",
"Julien",
""
],
[
"Marciano",
"Antonino",
""
]
] | Scalar cosmological perturbations in loop quantum cosmology (LQC) is revisited in a covariant manner, using self dual Ashtekar variables. For real-valued Ashtekar-Barbero variables, this `deformed algebra' approach has been shown to implement holonomy corrections from loop quantum gravity (LQG) in a consistent manner, ... |
1411.4811 | Mubasher Jamil | Bushra Majeed, Mubasher Jamil, Saqib Hussain | Particle Dynamics Around Weakly Magnetized Reissner-Nordstr\"{o}m Black
Hole | 16 pages, 16 figures, version accepted for publication in 'Advances
in High Energy Physics' | Advances in High Energy Physics 2015 (2015) 671259 | 10.1155/2015/671259 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Considering the geometry of Reissner-Nordstr\"{o}m (RN) black hole immersed
in magnetic field we have studied the dynamics of neutral and charged
particles. A collision of particles in the inner stable circular orbit is
considered and the conditions for the escape of colliding particles from the
vicinity of black hol... | [
{
"created": "Tue, 18 Nov 2014 11:24:38 GMT",
"version": "v1"
},
{
"created": "Wed, 25 Nov 2015 10:19:19 GMT",
"version": "v2"
}
] | 2015-12-18 | [
[
"Majeed",
"Bushra",
""
],
[
"Jamil",
"Mubasher",
""
],
[
"Hussain",
"Saqib",
""
]
] | Considering the geometry of Reissner-Nordstr\"{o}m (RN) black hole immersed in magnetic field we have studied the dynamics of neutral and charged particles. A collision of particles in the inner stable circular orbit is considered and the conditions for the escape of colliding particles from the vicinity of black hole ... |
0901.1773 | Petr Tretyakov | Petr Tretyakov | Modified gravity with vacuum polarization | 5 pages, 2 figures, in press, contribution to the anniversary volume
"The Problems of Modern Cosmology", on the occasion of the 50th birthday of
Prof. S. D. Odintsov. Editor: Prof. P. M. Lavrov, Tomsk State Pedagogical
University | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A brief review of cosmology in some generalized modified gravity theories
with vacuum polarization is presented. Stability question of de Sitter solution
is investigated.
| [
{
"created": "Tue, 13 Jan 2009 12:22:40 GMT",
"version": "v1"
}
] | 2009-01-14 | [
[
"Tretyakov",
"Petr",
""
]
] | A brief review of cosmology in some generalized modified gravity theories with vacuum polarization is presented. Stability question of de Sitter solution is investigated. |
2301.10848 | Samuel Oliveira | Samuel W. P. Oliveira, Guilherme Y. Oyadomari, Ilya L. Shapiro | Pauli equation and charged spin-1/2 particle in a weak gravitational
field | 21 pages, no figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using the nonrelativistic approximation in the curved-space Dirac equation,
the analog of the Pauli equation is derived for a weak, but otherwise
arbitrary, gravitational field, in the presence of an electromagnetic field. On
top of that, are obtained the equations of motion for the massive spin-$1/2$
charged particl... | [
{
"created": "Wed, 25 Jan 2023 22:14:33 GMT",
"version": "v1"
}
] | 2023-01-27 | [
[
"Oliveira",
"Samuel W. P.",
""
],
[
"Oyadomari",
"Guilherme Y.",
""
],
[
"Shapiro",
"Ilya L.",
""
]
] | Using the nonrelativistic approximation in the curved-space Dirac equation, the analog of the Pauli equation is derived for a weak, but otherwise arbitrary, gravitational field, in the presence of an electromagnetic field. On top of that, are obtained the equations of motion for the massive spin-$1/2$ charged particle.... |
2405.12449 | Rubens R. S. Oliveira | R. R. S. Oliveira | Dirac fermions under rainbow gravity effects in the Bonnor-Melvin-Lambda
spacetime | 12 pages, 3 figures, 2 tables. arXiv admin note: text overlap with
arXiv:2403.01366 | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we study the relativistic energy spectrum for Dirac fermions
under rainbow gravity effects in the $(3+1)$-dimensional Bonnor-Melvin-Lambda
spacetime, where we work with the curved Dirac equation in cylindrical
coordinates. Using the tetrads formalism of General Relativity and considering
a first-order ... | [
{
"created": "Tue, 21 May 2024 01:57:06 GMT",
"version": "v1"
}
] | 2024-05-22 | [
[
"Oliveira",
"R. R. S.",
""
]
] | In this paper, we study the relativistic energy spectrum for Dirac fermions under rainbow gravity effects in the $(3+1)$-dimensional Bonnor-Melvin-Lambda spacetime, where we work with the curved Dirac equation in cylindrical coordinates. Using the tetrads formalism of General Relativity and considering a first-order ap... |
0801.1000 | David Weld | D. M. Weld, J. Xia, B. Cabrera, A. Kapitulnik | A New Apparatus for Detecting Micron-Scale Deviations from Newtonian
Gravity | 20 pages, 24 figures. Added references, edited discussion for clarity | Phys.Rev.D77:062006,2008 | 10.1103/PhysRevD.77.062006 | null | gr-qc cond-mat.other hep-ph | null | We describe the design and construction of a new apparatus for detecting or
constraining deviations from Newtonian gravity at short length scales. The
apparatus consists of a new type of probe with rotary mass actuation and
cantilever-based force detection which is used to directly measure the force
between two micro... | [
{
"created": "Mon, 7 Jan 2008 14:37:07 GMT",
"version": "v1"
},
{
"created": "Tue, 12 Feb 2008 00:03:17 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Weld",
"D. M.",
""
],
[
"Xia",
"J.",
""
],
[
"Cabrera",
"B.",
""
],
[
"Kapitulnik",
"A.",
""
]
] | We describe the design and construction of a new apparatus for detecting or constraining deviations from Newtonian gravity at short length scales. The apparatus consists of a new type of probe with rotary mass actuation and cantilever-based force detection which is used to directly measure the force between two microma... |
2403.03965 | Steven Balbus | Steven A. Balbus | Determining the difference between local acceleration and local gravity:
applications of the equivalence principle to relativistic trajectories | 16 pages, 2 figures. Accepted for publication in the American Journal
of Physics | null | 10.1119/5.0162082 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We show by direct calculation that the common Equivalence Principle
explanation for why gravity must deflect light is quantitatively incorrect by a
factor of three in Schwarzschild geometry. It is therefore possible, at least
as a matter of principle, to tell the difference between local acceleration and
a true gravi... | [
{
"created": "Mon, 4 Mar 2024 21:26:07 GMT",
"version": "v1"
}
] | 2024-03-08 | [
[
"Balbus",
"Steven A.",
""
]
] | We show by direct calculation that the common Equivalence Principle explanation for why gravity must deflect light is quantitatively incorrect by a factor of three in Schwarzschild geometry. It is therefore possible, at least as a matter of principle, to tell the difference between local acceleration and a true gravita... |
1207.2660 | Alessandro Fabbri | R. Balbinot, I. Carusotto, A. Fabbri, C. Mayoral, and A. Recati | Understanding Hawking radiation from simple models of atomic
Bose-Einstein condensates | 41 pages. to appear in the proceedings of the IX SIGRAV School on
'Analogue Gravity', Como (Italy), May 2011 | null | 10.1007/978-3-319-00266-8_9 | null | gr-qc cond-mat.quant-gas hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This chapter is an introduction to the Bogoliubov theory of dilute Bose
condensates as applied to the study of the spontaneous emission of phonons in a
stationary condensate flowing at supersonic speeds. This emission process is a
condensed-matter analog of Hawking radiation from astrophysical black holes but
is deri... | [
{
"created": "Wed, 11 Jul 2012 14:50:45 GMT",
"version": "v1"
}
] | 2015-06-05 | [
[
"Balbinot",
"R.",
""
],
[
"Carusotto",
"I.",
""
],
[
"Fabbri",
"A.",
""
],
[
"Mayoral",
"C.",
""
],
[
"Recati",
"A.",
""
]
] | This chapter is an introduction to the Bogoliubov theory of dilute Bose condensates as applied to the study of the spontaneous emission of phonons in a stationary condensate flowing at supersonic speeds. This emission process is a condensed-matter analog of Hawking radiation from astrophysical black holes but is derive... |
gr-qc/0609017 | Joan Sola | Julio C. Fabris, Ilya L. Shapiro, Joan Sola | Density Perturbations for Running Cosmological Constant | LaTeX, 21 pages, 5 figures. Extended discussion, references added.
Version accepted in JCAP | JCAP 0702:016,2007 | 10.1088/1475-7516/2007/02/016 | UB-ECM-PF-06/14 | gr-qc astro-ph hep-ph hep-th | null | The dynamics of density and metric perturbations is investigated for the
previously developed model where the decay of the vacuum energy into matter (or
vice versa) is due to the renormalization group (RG) running of the
cosmological constant (CC) term. The evolution of the CC depends on the single
parameter \nu, whi... | [
{
"created": "Tue, 5 Sep 2006 23:39:18 GMT",
"version": "v1"
},
{
"created": "Wed, 13 Sep 2006 21:50:13 GMT",
"version": "v2"
},
{
"created": "Fri, 26 Jan 2007 19:46:29 GMT",
"version": "v3"
}
] | 2010-10-27 | [
[
"Fabris",
"Julio C.",
""
],
[
"Shapiro",
"Ilya L.",
""
],
[
"Sola",
"Joan",
""
]
] | The dynamics of density and metric perturbations is investigated for the previously developed model where the decay of the vacuum energy into matter (or vice versa) is due to the renormalization group (RG) running of the cosmological constant (CC) term. The evolution of the CC depends on the single parameter \nu, which... |
2001.11412 | Geraint Pratten | Geraint Pratten, Sascha Husa, Cecilio Garcia-Quiros, Marta Colleoni,
Antoni Ramos-Buades, Hector Estelles, Rafel Jaume | Setting the cornerstone for the IMRPhenomX family of models for
gravitational waves from compact binaries: The dominant harmonic for
non-precessing quasi-circular black holes | 29 pages. 20 figures. Comments and feedback welcome! This paper
corresponds to LIGO DCC P2000018 | Phys. Rev. D 102, 064001 (2020) | 10.1103/PhysRevD.102.064001 | https://dcc.ligo.org/LIGO-P2000018 | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we present IMRPhenomXAS, a thorough overhaul of the IMRPhenomD
[1,2] waveform model, which describes the dominant $l=2, \:| m | = 2$ spherical
harmonic mode of non-precessing coalescing black holes in terms of piecewise
closed form expressions in the frequency domain. Improvements include in
particular ... | [
{
"created": "Thu, 30 Jan 2020 15:46:20 GMT",
"version": "v1"
}
] | 2020-09-09 | [
[
"Pratten",
"Geraint",
""
],
[
"Husa",
"Sascha",
""
],
[
"Garcia-Quiros",
"Cecilio",
""
],
[
"Colleoni",
"Marta",
""
],
[
"Ramos-Buades",
"Antoni",
""
],
[
"Estelles",
"Hector",
""
],
[
"Jaume",
"Rafel",
""
... | In this paper we present IMRPhenomXAS, a thorough overhaul of the IMRPhenomD [1,2] waveform model, which describes the dominant $l=2, \:| m | = 2$ spherical harmonic mode of non-precessing coalescing black holes in terms of piecewise closed form expressions in the frequency domain. Improvements include in particular th... |
1712.06621 | Sumanta Chakraborty | Karthik Rajeev, Sumanta Chakraborty and T. Padmanabhan | A comment on generalized Schwinger effect | published version | Eur. Phys. J. C 78, 836 (2018) | 10.1140/epjc/s10052-018-6310-2 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A spatially homogeneous, time-dependent, electric field can produce charged
particle pairs from the vacuum. When the electric field is constant, the mean
number of pairs which are produced depends on the electric field and the
coupling constant in a non-analytic manner, showing that this result cannot be
obtained fro... | [
{
"created": "Mon, 18 Dec 2017 19:03:28 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Oct 2018 07:29:03 GMT",
"version": "v2"
}
] | 2018-10-26 | [
[
"Rajeev",
"Karthik",
""
],
[
"Chakraborty",
"Sumanta",
""
],
[
"Padmanabhan",
"T.",
""
]
] | A spatially homogeneous, time-dependent, electric field can produce charged particle pairs from the vacuum. When the electric field is constant, the mean number of pairs which are produced depends on the electric field and the coupling constant in a non-analytic manner, showing that this result cannot be obtained from ... |
0912.0708 | Joel Franklin | S. Deser, J. Franklin | Circular Symmetry in Topologically Massive Gravity | amplified published version | Class.Quant.Grav 27:1007002,2010 | 10.1088/0264-9381/27/10/107002 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We re-derive, compactly, a TMG decoupling theorem: source-free TMG separates
into its Einstein and Cotton sectors for spaces with a hypersurface-orthogonal
Killing vector, here concretely for circular symmetry. We can then generalize
it to include matter, which is necessarily null.
| [
{
"created": "Thu, 3 Dec 2009 20:42:16 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Dec 2009 21:45:38 GMT",
"version": "v2"
},
{
"created": "Wed, 17 Mar 2010 22:14:51 GMT",
"version": "v3"
}
] | 2010-04-22 | [
[
"Deser",
"S.",
""
],
[
"Franklin",
"J.",
""
]
] | We re-derive, compactly, a TMG decoupling theorem: source-free TMG separates into its Einstein and Cotton sectors for spaces with a hypersurface-orthogonal Killing vector, here concretely for circular symmetry. We can then generalize it to include matter, which is necessarily null. |
2110.08681 | Kunal Lobo | Samuel E. Gralla and Kunal Lobo | Self-force effects in post-Minkowskian scattering | 34 pages, 1 figure, corrected some equations from the previous
version | null | 10.1088/1361-6382/ac5d88 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We revisit the old problem of the self-force on a particle moving in a
weak-field spacetime in the context of renewed interest in two-body
gravitational scattering. We analytically calculate the scalar,
electromagnetic, and gravitational self-force on a particle moving on a
straight-line trajectory at a large distanc... | [
{
"created": "Sat, 16 Oct 2021 23:50:03 GMT",
"version": "v1"
},
{
"created": "Tue, 4 Jun 2024 21:37:47 GMT",
"version": "v2"
}
] | 2024-06-06 | [
[
"Gralla",
"Samuel E.",
""
],
[
"Lobo",
"Kunal",
""
]
] | We revisit the old problem of the self-force on a particle moving in a weak-field spacetime in the context of renewed interest in two-body gravitational scattering. We analytically calculate the scalar, electromagnetic, and gravitational self-force on a particle moving on a straight-line trajectory at a large distance ... |
1410.5950 | Meng-Sen Ma | Meng-Sen Ma, Li-Chun Zhang, Hui-Hua Zhao, Ren Zhao | Phase transition of the higher dimensional charged Gauss-Bonnet black
hole in de Sitter spacetime | 9 pages, 16 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the phase transition of charged Gauss-Bonnet-de Sitter (GB-dS) black
hole. For black holes in de Sitter spacetime, there is not only black hole
horizon, but also the cosmological horizon. The thermodynamic quantities on the
both horizons satisfy the first law of the black hole thermodynamics,
respectively; m... | [
{
"created": "Wed, 22 Oct 2014 08:57:05 GMT",
"version": "v1"
}
] | 2014-10-23 | [
[
"Ma",
"Meng-Sen",
""
],
[
"Zhang",
"Li-Chun",
""
],
[
"Zhao",
"Hui-Hua",
""
],
[
"Zhao",
"Ren",
""
]
] | We study the phase transition of charged Gauss-Bonnet-de Sitter (GB-dS) black hole. For black holes in de Sitter spacetime, there is not only black hole horizon, but also the cosmological horizon. The thermodynamic quantities on the both horizons satisfy the first law of the black hole thermodynamics, respectively; mor... |
2101.08624 | Alessandro Nagar | Alessandro Nagar, Alice Bonino, and Piero Rettegno | Effective one body multipolar waveform model for spin-aligned,
quasi-circular, eccentric, hyperbolic black hole binaries | 23 pages, 21 figures. Improved version with additional appendix
reporting code performance. To appear in Phys. Rev. D | Phys. Rev. D 103, 104021 (2021) | 10.1103/PhysRevD.103.104021 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Building upon recent work, we present an improved effective-one-body (EOB)
model for spin-aligned, coalescing, black hole binaries with generic orbital
configurations, i.e. quasi-circular, eccentric or hyperbolic orbits. The model
relies on the idea of incorporating general Newtonian prefactors, instead of
the usual ... | [
{
"created": "Thu, 21 Jan 2021 14:13:36 GMT",
"version": "v1"
},
{
"created": "Tue, 26 Jan 2021 14:13:52 GMT",
"version": "v2"
},
{
"created": "Wed, 14 Apr 2021 09:07:41 GMT",
"version": "v3"
}
] | 2021-05-19 | [
[
"Nagar",
"Alessandro",
""
],
[
"Bonino",
"Alice",
""
],
[
"Rettegno",
"Piero",
""
]
] | Building upon recent work, we present an improved effective-one-body (EOB) model for spin-aligned, coalescing, black hole binaries with generic orbital configurations, i.e. quasi-circular, eccentric or hyperbolic orbits. The model relies on the idea of incorporating general Newtonian prefactors, instead of the usual qu... |
1410.0352 | Seyed Hossein Hendi Dr. | S. H. Hendi, S. Panahiyan and B. Eslam Panah | $P-V$ criticality and geometrothermodynamics of black holes with
Born-Infeld type nonlinear electrodynamics | Two new sections and more clarifications are added; minor changes in
title; 15 pages with 12 figures | International Journal of Modern Physics D Vol. 25, No. 1 (2016)
1650010 | 10.1142/S0218271816500103 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we take into account the black hole solutions of Einstein
gravity with logarithmic and exponential forms of nonlinear electrodynamics. We
consider $\Lambda$ as a dynamical pressure to study the analogy of the black
holes with the Van der Waals system. We plot P-v, T-v and G-T diagrams and
investigate t... | [
{
"created": "Wed, 1 Oct 2014 02:28:21 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Oct 2014 18:18:19 GMT",
"version": "v2"
},
{
"created": "Wed, 24 Jun 2015 07:13:50 GMT",
"version": "v3"
}
] | 2015-11-25 | [
[
"Hendi",
"S. H.",
""
],
[
"Panahiyan",
"S.",
""
],
[
"Panah",
"B. Eslam",
""
]
] | In this paper, we take into account the black hole solutions of Einstein gravity with logarithmic and exponential forms of nonlinear electrodynamics. We consider $\Lambda$ as a dynamical pressure to study the analogy of the black holes with the Van der Waals system. We plot P-v, T-v and G-T diagrams and investigate the... |
gr-qc/9409041 | G. Rein | Gerhard Rein | Cosmological solutions of the Vlasov-Einstein system with spherical,
plane, and hyperbolic symmetry | 32 pages, LaTeX, report 941 | Math.Proc.Cambridge Phil.Soc. 119 (1996) 739-762 | 10.1017/S0305004100074569 | null | gr-qc | null | The Vlasov-Einstein system describes a self-gravitating, collisionless gas
within the framework of general relativity. We investigate the initial value
problem in a cosmological setting with spherical, plane, or hyperbolic symmetry
and prove that for small initial data solutions exist up to a spacetime
singularity wh... | [
{
"created": "Tue, 20 Sep 1994 08:14:19 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Rein",
"Gerhard",
""
]
] | The Vlasov-Einstein system describes a self-gravitating, collisionless gas within the framework of general relativity. We investigate the initial value problem in a cosmological setting with spherical, plane, or hyperbolic symmetry and prove that for small initial data solutions exist up to a spacetime singularity whic... |
gr-qc/9702002 | Luis Lehner | R. Gomez, L. Lehner, P. Papadopoulos and J. Winicour | The eth formalism in numerical relativity | 18 pages. To be published in Class. Quantum Grav | Class.Quant.Grav. 14 (1997) 977-990 | 10.1088/0264-9381/14/4/013 | null | gr-qc | null | We present a finite difference version of the eth formalism, which allows use
of tensor fields in spherical coordinates in a manner which avoids polar
singularities. The method employs two overlapping stereographic coordinate
patches, with interpolations between the patches in the regions of overlap. It
provides a ne... | [
{
"created": "Fri, 31 Jan 1997 16:03:26 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Gomez",
"R.",
""
],
[
"Lehner",
"L.",
""
],
[
"Papadopoulos",
"P.",
""
],
[
"Winicour",
"J.",
""
]
] | We present a finite difference version of the eth formalism, which allows use of tensor fields in spherical coordinates in a manner which avoids polar singularities. The method employs two overlapping stereographic coordinate patches, with interpolations between the patches in the regions of overlap. It provides a new ... |
1602.07192 | Sergey Yu. Vernov | Alexander Yu. Kamenshchik, Ekaterina O. Pozdeeva, Sergey Yu. Vernov,
Alessandro Tronconi, Giovanni Venturi | Transformations between Jordan and Einstein frames: Bounces,
antigravity, and crossing singularities | 15 pages, v2: title changed, presentation improved, references added,
accepted for publication in Phys. Rev. D | Phys. Rev. D 94 (2016) 063510 | 10.1103/PhysRevD.94.063510 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the relation between the Jordan-Einstein frame transition and the
possible description of the crossing of singularities in flat Friedmann
universes, using the fact that the regular evolution in one frame can
correspond to crossing singularities in the other frame. We show that some
interesting effects arise ... | [
{
"created": "Tue, 23 Feb 2016 15:27:09 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Sep 2016 18:27:45 GMT",
"version": "v2"
}
] | 2016-09-14 | [
[
"Kamenshchik",
"Alexander Yu.",
""
],
[
"Pozdeeva",
"Ekaterina O.",
""
],
[
"Vernov",
"Sergey Yu.",
""
],
[
"Tronconi",
"Alessandro",
""
],
[
"Venturi",
"Giovanni",
""
]
] | We study the relation between the Jordan-Einstein frame transition and the possible description of the crossing of singularities in flat Friedmann universes, using the fact that the regular evolution in one frame can correspond to crossing singularities in the other frame. We show that some interesting effects arise in... |
gr-qc/9607051 | S. R. Schreckenberg | S. Schreckenberg | Symmetry and History Quantum Theory: An analogue of Wigner's Theorem | To appear in Jour.Math.Phys.; 25 pages; Latex-document | J.Math.Phys. 37 (1996) 6086-6105 | 10.1063/1.531765 | Imperial/TP/95-96/40 | gr-qc quant-ph | null | The basic ingredients of the `consistent histories' approach to quantum
theory are a space $\UP$ of `history propositions' and a space $\D$ of
`decoherence functionals'. In this article we consider such history quantum
theories in the case where $\UP$ is given by the set of projectors $\P(\V)$ on
some Hilbert space $... | [
{
"created": "Tue, 23 Jul 1996 13:00:40 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Schreckenberg",
"S.",
""
]
] | The basic ingredients of the `consistent histories' approach to quantum theory are a space $\UP$ of `history propositions' and a space $\D$ of `decoherence functionals'. In this article we consider such history quantum theories in the case where $\UP$ is given by the set of projectors $\P(\V)$ on some Hilbert space $\V... |
1707.06459 | Abdel Nasser Tawfik | A. Tawfik, A. Diab (Egyptian Ctr. Theor. Phys., Cairo, WLCAPP, Cairo),
E. Abou El Dahab (Egyptian Ctr. Theor. Phys., Cairo, MUTI, Cairo) | Minimal-supersymmetric extended inflation field in Horava-Lifshitz
gravity | 21 pages, 5 figures, accepted for publication in IJMPD | International Journal of Modern Physics D Vol. 26 (2017) 1750166
(16 pages) | 10.1142/S0218271817501668 | ECTP-2016-16, WLCAPP-2016-16 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the Friedmann inflation in general covariant Horava-Lifshitz (HL)
gravity without the projectability conditions and with detailed and
non-detailed balance conditions. Accordingly, we derive modifications in the
Friedmann equations due to a single-scalar field potential describing
minimal-supersymmetrically e... | [
{
"created": "Wed, 19 Jul 2017 12:51:44 GMT",
"version": "v1"
}
] | 2017-12-04 | [
[
"Tawfik",
"A.",
"",
"Egyptian Ctr. Theor. Phys., Cairo, WLCAPP, Cairo"
],
[
"Diab",
"A.",
"",
"Egyptian Ctr. Theor. Phys., Cairo, WLCAPP, Cairo"
],
[
"Dahab",
"E. Abou El",
"",
"Egyptian Ctr. Theor. Phys., Cairo, MUTI, Cairo"
]
] | We study the Friedmann inflation in general covariant Horava-Lifshitz (HL) gravity without the projectability conditions and with detailed and non-detailed balance conditions. Accordingly, we derive modifications in the Friedmann equations due to a single-scalar field potential describing minimal-supersymmetrically ext... |
2209.11541 | Ouali Taoufik | Brahim Asfour, Aatifa Bargach, Ahmed Errahmani, and Taoufik Ouali | Higgs inflation model with non-minimal coupling in hybrid Palatini
approach | 9 pages, 4 figures | Chinese Physics C Vol. 48, No. 4 (2024) 045104 | 10.1088/1674-1137/ad1dcd | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The inflation model with non-minimal coupling scalar field in the context of
the hybrid metric Palatini is studied in this paper. We derive the Einstein's
field equations, the equations of motion of the scalar field. Furthermore,the
background and the perturbative parameters are obtained by means of Friedmann
equatio... | [
{
"created": "Fri, 23 Sep 2022 12:00:13 GMT",
"version": "v1"
},
{
"created": "Wed, 28 Feb 2024 13:43:43 GMT",
"version": "v2"
}
] | 2024-02-29 | [
[
"Asfour",
"Brahim",
""
],
[
"Bargach",
"Aatifa",
""
],
[
"Errahmani",
"Ahmed",
""
],
[
"Ouali",
"Taoufik",
""
]
] | The inflation model with non-minimal coupling scalar field in the context of the hybrid metric Palatini is studied in this paper. We derive the Einstein's field equations, the equations of motion of the scalar field. Furthermore,the background and the perturbative parameters are obtained by means of Friedmann equation ... |
gr-qc/0611064 | Valery Kiselev | V.V.Kiselev | Scaling attractors for quintessence in flat universe with cosmological
term | 11 pages, 16 eps-figures, revtex4, reference with comment added | JCAP0801:019,2008 | 10.1088/1475-7516/2008/01/019 | null | gr-qc | null | For evolution of flat universe, we classify late time and future attractors
with scaling behavior of scalar field quintessence in the case of potential,
which, at definite values of its parameters and initial data, corresponds to
exact scaling in the presence of cosmological constant.
| [
{
"created": "Mon, 13 Nov 2006 07:36:01 GMT",
"version": "v1"
},
{
"created": "Tue, 21 Nov 2006 12:35:49 GMT",
"version": "v2"
},
{
"created": "Thu, 8 Feb 2007 11:55:21 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Kiselev",
"V. V.",
""
]
] | For evolution of flat universe, we classify late time and future attractors with scaling behavior of scalar field quintessence in the case of potential, which, at definite values of its parameters and initial data, corresponds to exact scaling in the presence of cosmological constant. |
0804.2931 | Hongsheng Zhang | Hongsheng Zhang, Hyerim Noh and Zong-Hong Zhu | A new class of plane symmetric solution | 10 pages, v2: a typo in equation (37) corrected, v3: equation (68)
corrected, PLB V663, Pages 291-296 | Phys.Lett.B663:291-296,2008 | 10.1016/j.physletb.2008.04.022 | null | gr-qc astro-ph hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A new class of static plane symmetric solution of Einstein field equation
generated by a perfect fluid source is put forward. A special family of this
new solution is investigated in detail. The constraints on the parameters by
different energy conditions are studied. The classical stability of this
solution is discu... | [
{
"created": "Fri, 18 Apr 2008 02:53:02 GMT",
"version": "v1"
},
{
"created": "Tue, 13 May 2008 00:44:54 GMT",
"version": "v2"
},
{
"created": "Wed, 1 Apr 2009 05:31:56 GMT",
"version": "v3"
}
] | 2009-04-01 | [
[
"Zhang",
"Hongsheng",
""
],
[
"Noh",
"Hyerim",
""
],
[
"Zhu",
"Zong-Hong",
""
]
] | A new class of static plane symmetric solution of Einstein field equation generated by a perfect fluid source is put forward. A special family of this new solution is investigated in detail. The constraints on the parameters by different energy conditions are studied. The classical stability of this solution is discuss... |
0901.3762 | Rubab Khan | Rubab Khan, Shourov Chatterji | Enhancing the capabilities of LIGO time-frequency plane searches through
clustering | 17 pages, 6 figures. Submitted to CQG on Dec 12, 2008; accepted on
June 18, 2009 | Class.Quant.Grav.26:155009,2009 | 10.1088/0264-9381/26/15/155009 | null | gr-qc astro-ph.IM cs.CV physics.data-an | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | One class of gravitational wave signals LIGO is searching for consists of
short duration bursts of unknown waveforms. Potential sources include core
collapse supernovae, gamma ray burst progenitors, and mergers of binary black
holes or neutron stars. We present a density-based clustering algorithm to
improve the perf... | [
{
"created": "Fri, 23 Jan 2009 20:59:45 GMT",
"version": "v1"
},
{
"created": "Fri, 23 Jan 2009 21:41:46 GMT",
"version": "v2"
},
{
"created": "Thu, 18 Jun 2009 20:12:08 GMT",
"version": "v3"
}
] | 2009-07-22 | [
[
"Khan",
"Rubab",
""
],
[
"Chatterji",
"Shourov",
""
]
] | One class of gravitational wave signals LIGO is searching for consists of short duration bursts of unknown waveforms. Potential sources include core collapse supernovae, gamma ray burst progenitors, and mergers of binary black holes or neutron stars. We present a density-based clustering algorithm to improve the perfor... |
2210.03631 | Tiberiu Harko | Tiberiu Harko, Shahab Shahidi | Palatini formulation of the conformally invariant $f\left(R, L_m\right)$
gravity theory | 17 pages, 6 figures, accepted for publication in EPJC | null | 10.1140/epjc/s10052-022-10891-z | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the field equations of the conformally invariant models of
gravity with curvature-matter coupling, constructed in Weyl geometry, by using
the Palatini formalism. We consider the case in which the Lagrangian is given
by the sum of the square of the Weyl scalar, of the strength of the field
associated to... | [
{
"created": "Fri, 7 Oct 2022 15:35:48 GMT",
"version": "v1"
}
] | 2022-11-23 | [
[
"Harko",
"Tiberiu",
""
],
[
"Shahidi",
"Shahab",
""
]
] | We investigate the field equations of the conformally invariant models of gravity with curvature-matter coupling, constructed in Weyl geometry, by using the Palatini formalism. We consider the case in which the Lagrangian is given by the sum of the square of the Weyl scalar, of the strength of the field associated to t... |
1210.5922 | Branislav Nikoli\'c | Branislav D. Nikoli\'c, Milan R. Panti\'c | A Possible Intuitive Derivation of the Kerr Metric in Orthogonal Form
Based On Ellipsoidal Metric Ansatz | Corrected version, argument for the reciprocal relation between
time-time and radial-radial metric tensor component emphasized and cited, 3
new references added; 19 pages, 11 references, 1 table | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we show that it is possible to derive the Kerr solution in an
alternative, intuitive way, based on physical reasoning and starting from an
orthogonal metric ansatz having manifest ellipsoidal space-time symmetry
(ellipsoidal symmetry). This is possible because both flat metric in oblate
spheroidal (elli... | [
{
"created": "Mon, 22 Oct 2012 15:08:46 GMT",
"version": "v1"
},
{
"created": "Tue, 5 Mar 2013 17:21:42 GMT",
"version": "v2"
}
] | 2013-03-06 | [
[
"Nikolić",
"Branislav D.",
""
],
[
"Pantić",
"Milan R.",
""
]
] | In this paper we show that it is possible to derive the Kerr solution in an alternative, intuitive way, based on physical reasoning and starting from an orthogonal metric ansatz having manifest ellipsoidal space-time symmetry (ellipsoidal symmetry). This is possible because both flat metric in oblate spheroidal (ellips... |
2101.05973 | Jose Socorro Garcia | Luis Rey D\'iaz-Barr\'on, Abraham Espinoza-Garc\'ia, S.
P\'erez-Pay\'an, and J. Socorro | Anisotropic chiral cosmology: exact solutions | 23 pages, 4 figures, The names are put as appear published in the
IJMPD, we add some references. arXiv admin note: text overlap with
arXiv:2012.11108 | null | 10.1142/S0218271821500802 | null | gr-qc math-ph math.MP | http://creativecommons.org/publicdomain/zero/1.0/ | In this work, we investigate the anisotropic Bianchi type I cosmological
model in the chiral setup, in a twofold manner. Firstly, we consider a
quintessence plus a k-essence like model, where two scalar fields but only one
potential term is considered. Secondly, we look at a model where in addition to
the two scalar ... | [
{
"created": "Fri, 15 Jan 2021 05:42:28 GMT",
"version": "v1"
},
{
"created": "Sun, 27 Jun 2021 15:00:49 GMT",
"version": "v2"
}
] | 2021-06-29 | [
[
"Díaz-Barrón",
"Luis Rey",
""
],
[
"Espinoza-García",
"Abraham",
""
],
[
"Pérez-Payán",
"S.",
""
],
[
"Socorro",
"J.",
""
]
] | In this work, we investigate the anisotropic Bianchi type I cosmological model in the chiral setup, in a twofold manner. Firstly, we consider a quintessence plus a k-essence like model, where two scalar fields but only one potential term is considered. Secondly, we look at a model where in addition to the two scalar fi... |
1710.06195 | Benjamin Bahr | Benjamin Bahr, Vadim Belov | On the volume simplicity constraint in the EPRL spin foam model | 14 pages, 5 figures | Phys. Rev. D 97, 086009 (2018) | 10.1103/PhysRevD.97.086009 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a quantum version of the quadratic volume simplicity constraint
for the EPRL spin foam model. It relies on a formula for the volume of
4-dimensional polyhedra, depending on its bivectors and the knotting class of
its boundary graph. While this leads to no further condition for the 4-simplex,
the constraint... | [
{
"created": "Tue, 17 Oct 2017 10:26:52 GMT",
"version": "v1"
}
] | 2018-04-25 | [
[
"Bahr",
"Benjamin",
""
],
[
"Belov",
"Vadim",
""
]
] | We propose a quantum version of the quadratic volume simplicity constraint for the EPRL spin foam model. It relies on a formula for the volume of 4-dimensional polyhedra, depending on its bivectors and the knotting class of its boundary graph. While this leads to no further condition for the 4-simplex, the constraint b... |
gr-qc/0005064 | Alicia M. Sintes | A.M. Sintes, A.A. Coley, D.J. McManus | On space-times admitting shear-free, irrotational, geodesic null
congruences | Latex, 4 pages. Published in "Analytical and Numerical Approaches to
Relativity: Sources of Gravitational Radiation". Edts. C. Bona, J. Carot, L.
Mas and J. Stela; U.I.B. Mallorca, pp. 266-270 (1998) | null | null | null | gr-qc | null | Space-times admitting a shear-free, irrotational, geodesic null congruence
are studied. Attention is focused on those space-times in which the
gravitational field is a combination of a perfect fluid and null radiation.
| [
{
"created": "Tue, 16 May 2000 13:56:42 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Sintes",
"A. M.",
""
],
[
"Coley",
"A. A.",
""
],
[
"McManus",
"D. J.",
""
]
] | Space-times admitting a shear-free, irrotational, geodesic null congruence are studied. Attention is focused on those space-times in which the gravitational field is a combination of a perfect fluid and null radiation. |
1703.08518 | Youngsub Yoon | Youngsub Yoon | Maxwell-Boltzmann type Hawking radiation | 4 pages, accepted for publication at Modern Physics Letters A | Mod. Phys. Lett. A, Vol. 32, No. 12 (2017) 1750071 | 10.1142/S0217732317500717 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Twenty years ago, Rovelli proposed that the degeneracy of black hole (i.e.
the exponential of the Bekenstein-Hawking entropy) is given by the number of
ways the black hole horizon area can be expressed as a sum of unit areas.
However, when counting the sum, one should treat the area quanta on the black
hole horizon a... | [
{
"created": "Thu, 23 Mar 2017 02:50:57 GMT",
"version": "v1"
}
] | 2017-04-05 | [
[
"Yoon",
"Youngsub",
""
]
] | Twenty years ago, Rovelli proposed that the degeneracy of black hole (i.e. the exponential of the Bekenstein-Hawking entropy) is given by the number of ways the black hole horizon area can be expressed as a sum of unit areas. However, when counting the sum, one should treat the area quanta on the black hole horizon as ... |
1407.5551 | Hector Javier Hortua | Hector J. Hortua and Leonardo Casta\~neda | Equivalence between formulations in Cosmological Perturbation Theory:
The primordial magnetic fields as an example | Conference Proceedings, Magnetic Fields in the Universe IV, Playa del
Carmen, Mexico, February 2013 | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Nowdays, Cosmological Perturbation Theory is a standard and useful tool in
theoretical cosmology. In this work, we compare the 1+3 covariant formalism in
perturbation theory (Ellis et al.) to the gauge invariant approach (Bruni et
al.), and we show the equivalence of these formalisms to fix the choice of the
perturbe... | [
{
"created": "Mon, 21 Jul 2014 16:26:23 GMT",
"version": "v1"
}
] | 2014-07-22 | [
[
"Hortua",
"Hector J.",
""
],
[
"Castañeda",
"Leonardo",
""
]
] | Nowdays, Cosmological Perturbation Theory is a standard and useful tool in theoretical cosmology. In this work, we compare the 1+3 covariant formalism in perturbation theory (Ellis et al.) to the gauge invariant approach (Bruni et al.), and we show the equivalence of these formalisms to fix the choice of the perturbed ... |
2408.01871 | Mohammed Khalil | Yilber Fabian Bautista, Mohammed Khalil, Matteo Sergola, Chris
Kavanagh, Justin Vines | Post-Newtonian observables for aligned-spin binaries to sixth order in
spin from gravitational self-force and Compton amplitudes | 35 pages, 3 ancillary files | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Accurate modeling of compact binaries is essential for gravitational-wave
detection and parameter estimation, with spin being an important effect to
include in waveform models. In this paper, we derive new post-Newtonian (PN)
results for the conservative aligned-spin dynamics at next-to-next-to-leading
order for the ... | [
{
"created": "Sat, 3 Aug 2024 22:33:01 GMT",
"version": "v1"
}
] | 2024-08-06 | [
[
"Bautista",
"Yilber Fabian",
""
],
[
"Khalil",
"Mohammed",
""
],
[
"Sergola",
"Matteo",
""
],
[
"Kavanagh",
"Chris",
""
],
[
"Vines",
"Justin",
""
]
] | Accurate modeling of compact binaries is essential for gravitational-wave detection and parameter estimation, with spin being an important effect to include in waveform models. In this paper, we derive new post-Newtonian (PN) results for the conservative aligned-spin dynamics at next-to-next-to-leading order for the sp... |
gr-qc/0408064 | David Garfinkle | David Garfinkle | Gravitational collapse in anti de Sitter space | 9 pages, 13 figures | Phys.Rev. D70 (2004) 104015 | 10.1103/PhysRevD.70.104015 | null | gr-qc | null | A numerical and analytic treatment is presented here of the evolution of
initial data of the kind that was conjectured by Hertog, Horowitz and Maeda to
lead to a violation of cosmic censorship. That initial data is essentially a
thick domain wall connecting two regions of anti de Sitter space. The evolution
results i... | [
{
"created": "Wed, 18 Aug 2004 15:52:14 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Garfinkle",
"David",
""
]
] | A numerical and analytic treatment is presented here of the evolution of initial data of the kind that was conjectured by Hertog, Horowitz and Maeda to lead to a violation of cosmic censorship. That initial data is essentially a thick domain wall connecting two regions of anti de Sitter space. The evolution results in ... |
2407.17890 | Pablo Ba\~n\'on P\'erez | Pablo Ba\~n\'on P\'erez and Maarten DeKieviet | Differential Forms vs Geometric Algebra: The quest for the best
geometric language | 26 pages, 6 figures | null | null | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Differential forms is a highly geometric formalism for physics used from
field theories to General Relativity (GR) which has been a great upgrade over
vector calculus with the advantages of being coordinate-free and carrying a
high degree of geometrical content.
In recent years, Geometric Algebra appeared claiming ... | [
{
"created": "Thu, 25 Jul 2024 09:19:06 GMT",
"version": "v1"
}
] | 2024-07-26 | [
[
"Pérez",
"Pablo Bañón",
""
],
[
"DeKieviet",
"Maarten",
""
]
] | Differential forms is a highly geometric formalism for physics used from field theories to General Relativity (GR) which has been a great upgrade over vector calculus with the advantages of being coordinate-free and carrying a high degree of geometrical content. In recent years, Geometric Algebra appeared claiming to b... |
gr-qc/0204021 | Iver H{\aa}kon Brevik | I. Brevik | Cardy-Verlinde Entropy Formula in the Presence of a General Cosmological
State Equation | 10 pages, LaTeX, no figures | Phys.Rev.D65:127302,2002 | 10.1103/PhysRevD.65.127302 | null | gr-qc hep-th | null | As recently found by Youm [hep-th/0201268], the entropy of the universe will
no longer be expressible in the conventional Cardy-Verlinde form if one relaxes
the radiation dominance state equation and instead assumes a more general
equation of the form p=(\gamma-1)\rho, with \gamma a constant. We show that
Youm's gene... | [
{
"created": "Thu, 4 Apr 2002 15:07:26 GMT",
"version": "v1"
}
] | 2009-01-14 | [
[
"Brevik",
"I.",
""
]
] | As recently found by Youm [hep-th/0201268], the entropy of the universe will no longer be expressible in the conventional Cardy-Verlinde form if one relaxes the radiation dominance state equation and instead assumes a more general equation of the form p=(\gamma-1)\rho, with \gamma a constant. We show that Youm's genera... |
gr-qc/9807017 | Steven R. Brandt | S. Brandt, J.A. Font, J.M. Ibanez, J. Masso and E. Seidel | Numerical evolution of matter in dynamical axisymmetric black hole
spacetimes. I. Methods and tests | 42 pages, 20 figures, submitted to Phys Rev D | Comput.Phys.Commun. 124 (2000) 169-196 | 10.1016/S0010-4655(99)00447-6 | null | gr-qc astro-ph | null | We have developed a numerical code to study the evolution of self-gravitating
matter in dynamic black hole axisymmetric spacetimes in general relativity. The
matter fields are evolved with a high-resolution shock-capturing scheme that
uses the characteristic information of the general relativistic hydrodynamic
equati... | [
{
"created": "Thu, 9 Jul 1998 09:09:20 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Brandt",
"S.",
""
],
[
"Font",
"J. A.",
""
],
[
"Ibanez",
"J. M.",
""
],
[
"Masso",
"J.",
""
],
[
"Seidel",
"E.",
""
]
] | We have developed a numerical code to study the evolution of self-gravitating matter in dynamic black hole axisymmetric spacetimes in general relativity. The matter fields are evolved with a high-resolution shock-capturing scheme that uses the characteristic information of the general relativistic hydrodynamic equation... |
1411.1691 | Pierre-Andr\'e Mandrin Ph.D. | Pierre-Andr\'e Mandrin | Particle interactions predicted from minimum information | 8 pages. Improved: v2: quantum numbers, symmetries, indices. v3:
Proof altern. based on GR + phase invar.; quantum term removed; conserved
quantities / indices; space-time symm.; all fermions (SM); boson chains;
shortened. v4; Full space-time symm.; flavours U(1)xSU(2); Spin 1/2
torsion-compatible. v5: minor ch... | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A systematic structure of particle interactions is predicted within and
beyond the standard model. The proof is performed either on the basis of (A) a
generalisable form of general relativity or, equivalently, (B) minimum
information quantum gravity. The emerging structure comprises several chains of
interaction gene... | [
{
"created": "Thu, 6 Nov 2014 18:36:46 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Nov 2014 20:27:26 GMT",
"version": "v2"
},
{
"created": "Sat, 27 Dec 2014 16:46:03 GMT",
"version": "v3"
},
{
"created": "Fri, 2 Jan 2015 21:26:32 GMT",
"version": "v4"
},
{
"cre... | 2016-02-22 | [
[
"Mandrin",
"Pierre-André",
""
]
] | A systematic structure of particle interactions is predicted within and beyond the standard model. The proof is performed either on the basis of (A) a generalisable form of general relativity or, equivalently, (B) minimum information quantum gravity. The emerging structure comprises several chains of interaction genera... |
1902.05202 | Gregory Eskin | Gregory Eskin | Hawking radiation from not-extremal and extremal Reissner-Nordstrom
black holes | null | Pure and Applied Functional Analysis, 2 (2022), no. 3, 975-992 | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the non-extremal Reissner-Nordstrom black hole and construct a
wave packet that exhibits the Hawking radiation. We find the average of the
number of the created particles with respect to the $|0\rangle$ vacuum state
and with respect to Unruh type vacuum state. The average of the number operator
in the $|0... | [
{
"created": "Thu, 14 Feb 2019 03:19:37 GMT",
"version": "v1"
},
{
"created": "Sun, 11 Aug 2019 05:38:21 GMT",
"version": "v2"
},
{
"created": "Tue, 8 Sep 2020 22:16:55 GMT",
"version": "v3"
}
] | 2023-03-27 | [
[
"Eskin",
"Gregory",
""
]
] | We consider the non-extremal Reissner-Nordstrom black hole and construct a wave packet that exhibits the Hawking radiation. We find the average of the number of the created particles with respect to the $|0\rangle$ vacuum state and with respect to Unruh type vacuum state. The average of the number operator in the $|0\r... |
1101.3662 | J. Fernando Barbero G. | J. Fernando Barbero G., Eduardo J. S. Villase\~nor | Statistical description of the black hole degeneracy spectrum | 41 pages, 12 figures | Phys.Rev.D83:104013,2011 | 10.1103/PhysRevD.83.104013 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use mathematical methods based on generating functions to study the
statistical properties of the black hole degeneracy spectrum in loop quantum
gravity. In particular we will study the persistence of the observed effective
quantization of the entropy as a function of the horizon area. We will show
that this quant... | [
{
"created": "Wed, 19 Jan 2011 10:57:30 GMT",
"version": "v1"
}
] | 2015-03-17 | [
[
"G.",
"J. Fernando Barbero",
""
],
[
"Villaseñor",
"Eduardo J. S.",
""
]
] | We use mathematical methods based on generating functions to study the statistical properties of the black hole degeneracy spectrum in loop quantum gravity. In particular we will study the persistence of the observed effective quantization of the entropy as a function of the horizon area. We will show that this quantiz... |
gr-qc/0610003 | Kirill Bronnikov | K.A. Bronnikov, R.V. Konoplich, S.G. Rubin | Diversity of universes created by pure gravity | 14 pages, 8 figures, revtex4. Final version, some considerations
added in response to referee remarks | Class.Quant.Grav.24:1261-1278,2007 | 10.1088/0264-9381/24/5/011 | null | gr-qc | null | We show that a number of problems of modern cosmology may be solved in the
framework of multidimensional gravity with high-order curvature invariants,
without invoking other fields. We use a method employing a slow-change
approximation, able to work with rather a general form of the gravitational
action, and consider... | [
{
"created": "Sun, 1 Oct 2006 14:14:20 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Feb 2007 21:16:41 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Bronnikov",
"K. A.",
""
],
[
"Konoplich",
"R. V.",
""
],
[
"Rubin",
"S. G.",
""
]
] | We show that a number of problems of modern cosmology may be solved in the framework of multidimensional gravity with high-order curvature invariants, without invoking other fields. We use a method employing a slow-change approximation, able to work with rather a general form of the gravitational action, and consider K... |
gr-qc/9806026 | Rainer Kuehne | Rainer W. Kuhne | Gauge Theory of Gravity Requires Massive Torsion Field | 3 pages, Revtex | Int.J.Mod.Phys.A14:2531-2536,1999 | 10.1142/S0217751X99001251 | null | gr-qc hep-ph hep-th | null | One of the greatest unsolved issues of the physics of this century is to find
a quantum field theory of gravity. According to a vast amount of literature
unification of quantum field theory and gravitation requires a gauge theory of
gravity which includes torsion and an associated spin field. Various models
including... | [
{
"created": "Thu, 4 Jun 1998 17:23:06 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Kuhne",
"Rainer W.",
""
]
] | One of the greatest unsolved issues of the physics of this century is to find a quantum field theory of gravity. According to a vast amount of literature unification of quantum field theory and gravitation requires a gauge theory of gravity which includes torsion and an associated spin field. Various models including e... |
gr-qc/0411014 | Sbp Wickramasuriya | S.B.P. Wickramasuriya, V. Joseph, and K.I.S. Karunaratne | Geodesics in a Toroidal space-time | 10 Pages | null | null | null | gr-qc | null | We take a three dimensional Euclidian metric in toroidal coordinates and
consider the corresponding Laplace equation. The simplest solution of this
equation is taken. Based on this we build a Weyl space-time. This space-time is
transformed to cylindrical coordinates. It is shown by using Mathematica that
Weyl equatio... | [
{
"created": "Tue, 2 Nov 2004 02:43:33 GMT",
"version": "v1"
},
{
"created": "Mon, 29 Nov 2004 03:53:25 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Wickramasuriya",
"S. B. P.",
""
],
[
"Joseph",
"V.",
""
],
[
"Karunaratne",
"K. I. S.",
""
]
] | We take a three dimensional Euclidian metric in toroidal coordinates and consider the corresponding Laplace equation. The simplest solution of this equation is taken. Based on this we build a Weyl space-time. This space-time is transformed to cylindrical coordinates. It is shown by using Mathematica that Weyl equations... |
1910.03378 | Zhen-Ming Xu | Zhen-Ming Xu, Bin Wu and Wen-Li Yang | Fine micro-thermal structures for Reissner-Nordstr\"om black hole | v1:5 pages, 1 figure;v2:clarifications and references added; v3:
final version to be published in Chinese Physics C | Chinese Physics C Vol. 44, No. 9 (2020) 095106 | 10.1088/1674-1137/44/9/095106 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We solve the condundrum on whether the molecules of the Reissner-Nordstr\"om
black hole interact through the Ruppeiner thermodynamic geometry, basing our
study on the concept of the black hole molecule proposed in [Phys. Rev. Lett.
115 (2015) 111302] and choosing the appropriate extensive variables. Our
results show ... | [
{
"created": "Tue, 8 Oct 2019 13:13:02 GMT",
"version": "v1"
},
{
"created": "Tue, 25 Feb 2020 05:10:36 GMT",
"version": "v2"
},
{
"created": "Wed, 6 May 2020 01:52:38 GMT",
"version": "v3"
},
{
"created": "Tue, 1 Sep 2020 08:38:42 GMT",
"version": "v4"
}
] | 2020-09-02 | [
[
"Xu",
"Zhen-Ming",
""
],
[
"Wu",
"Bin",
""
],
[
"Yang",
"Wen-Li",
""
]
] | We solve the condundrum on whether the molecules of the Reissner-Nordstr\"om black hole interact through the Ruppeiner thermodynamic geometry, basing our study on the concept of the black hole molecule proposed in [Phys. Rev. Lett. 115 (2015) 111302] and choosing the appropriate extensive variables. Our results show th... |
1306.4011 | Delsate T\'erence | Y. Brihaye and T. Delsate | Gravitating Q-tubes and cylindrical spacetime | 14 pages, 7 figures. results extended, references added | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a model involving a self-interacting complex scalar field
minimally coupled to gravity and emphasize the cylindrically symmetric
classical solutions. A general ansatz is performed which transforms the field
equations into a system of differential equations. In the generic case, the
scalar field depends on... | [
{
"created": "Mon, 17 Jun 2013 20:32:31 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Jul 2013 08:40:38 GMT",
"version": "v2"
}
] | 2013-07-11 | [
[
"Brihaye",
"Y.",
""
],
[
"Delsate",
"T.",
""
]
] | We consider a model involving a self-interacting complex scalar field minimally coupled to gravity and emphasize the cylindrically symmetric classical solutions. A general ansatz is performed which transforms the field equations into a system of differential equations. In the generic case, the scalar field depends on t... |
gr-qc/9611020 | Alberto Saa | Alberto Saa | Quantum dynamics of non-relativistic particles and isometric embeddings | Revtex, 14 pages | Class.Quant.Grav. 14 (1997) 385-390 | 10.1088/0264-9381/14/2/012 | null | gr-qc | null | It is considered, in the framework of constrained systems, the quantum
dynamics of non-relativistic particles moving on a d-dimensional Riemannian
manifold M isometrically embedded in $R^{d+n}$. This generalizes recent
investigations where M has been assumed to be a hypersurface of $R^{d+1}$. We
show, contrary to rec... | [
{
"created": "Fri, 8 Nov 1996 14:44:17 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Saa",
"Alberto",
""
]
] | It is considered, in the framework of constrained systems, the quantum dynamics of non-relativistic particles moving on a d-dimensional Riemannian manifold M isometrically embedded in $R^{d+n}$. This generalizes recent investigations where M has been assumed to be a hypersurface of $R^{d+1}$. We show, contrary to recen... |
gr-qc/0602041 | Dragan Hajdukovic | Dragan Slavkov Hajdukovic | Testing existence of antigravity | null | null | null | null | gr-qc | null | After a brief review of arguments in favor of antigravity (as gravitational
repulsion between matter and antimatter) we present a simple idea for an
experimental test using antiprotons. Different experimental realizations of the
same basic idea are considered
| [
{
"created": "Sun, 12 Feb 2006 14:39:21 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Hajdukovic",
"Dragan Slavkov",
""
]
] | After a brief review of arguments in favor of antigravity (as gravitational repulsion between matter and antimatter) we present a simple idea for an experimental test using antiprotons. Different experimental realizations of the same basic idea are considered |
2305.06504 | Denitsa Staicova | Denitsa Staicova | Impact of Cosmology on Lorentz Invariance Violation Constraints from GRB
Time-Delays | 21 pages, prepared for the Classical and Quantum Gravity focus issue
"Focus on Quantum Gravity Phenomenology in the Multi-Messenger Era:
Challenges and Perspectives", final accepted for publication version | Class. Quantum Grav. 40 195012, 2023 | 10.1088/1361-6382/acf270 | null | gr-qc astro-ph.CO astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Putting constraints on a possible Lorentz Invariance Violation (LIV) from
astrophysical sources such as gamma-ray bursts (GRBs) is essential for finding
evidences of new theories of quantum gravity (QG) that predict an
energy-dependent speed of light. This search has its own difficulties, so
usually, the effect of th... | [
{
"created": "Thu, 11 May 2023 01:03:27 GMT",
"version": "v1"
},
{
"created": "Thu, 28 Sep 2023 23:16:55 GMT",
"version": "v2"
}
] | 2023-10-02 | [
[
"Staicova",
"Denitsa",
""
]
] | Putting constraints on a possible Lorentz Invariance Violation (LIV) from astrophysical sources such as gamma-ray bursts (GRBs) is essential for finding evidences of new theories of quantum gravity (QG) that predict an energy-dependent speed of light. This search has its own difficulties, so usually, the effect of the ... |
2006.07125 | Erik Lentz | Erik W. Lentz | Breaking the Warp Barrier: Hyper-Fast Solitons in
Einstein-Maxwell-Plasma Theory | 14 pages, 5 figures, comments welcome | null | null | null | gr-qc astro-ph.HE hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Solitons in space--time capable of transporting time-like observers at
superluminal speeds have long been tied to violations of the weak, strong, and
dominant energy conditions of general relativity. The negative-energy sources
required for these solitons must be created through energy-intensive
uncertainty principle... | [
{
"created": "Fri, 12 Jun 2020 12:33:05 GMT",
"version": "v1"
},
{
"created": "Mon, 10 Aug 2020 14:55:58 GMT",
"version": "v2"
}
] | 2020-08-11 | [
[
"Lentz",
"Erik W.",
""
]
] | Solitons in space--time capable of transporting time-like observers at superluminal speeds have long been tied to violations of the weak, strong, and dominant energy conditions of general relativity. The negative-energy sources required for these solitons must be created through energy-intensive uncertainty principle p... |
2012.10025 | Joshua Foo | Joshua Foo, Robert B. Mann and Magdalena Zych | Schr\"odinger's cat for de Sitter spacetime | 15+3 pages, 10 figures. Accepted in CQG | Class. Quantum Grav. 38 115010 (2021) | 10.1088/1361-6382/abf1c4 | null | gr-qc hep-th quant-ph | http://creativecommons.org/licenses/by/4.0/ | Quantum gravity is expected to contain descriptions of semiclassical
spacetime geometries in quantum superpositions. To date, no framework for
modelling such superpositions has been devised. Here, we provide a new
phenomenological description for the response of quantum probes (i.e.
Unruh-deWitt detectors) on a space... | [
{
"created": "Fri, 18 Dec 2020 02:54:35 GMT",
"version": "v1"
},
{
"created": "Thu, 18 Mar 2021 02:10:57 GMT",
"version": "v2"
}
] | 2021-05-11 | [
[
"Foo",
"Joshua",
""
],
[
"Mann",
"Robert B.",
""
],
[
"Zych",
"Magdalena",
""
]
] | Quantum gravity is expected to contain descriptions of semiclassical spacetime geometries in quantum superpositions. To date, no framework for modelling such superpositions has been devised. Here, we provide a new phenomenological description for the response of quantum probes (i.e. Unruh-deWitt detectors) on a spaceti... |
gr-qc/0004002 | David Brown | David Brown | Gravitational Waves from the Dynamical Bar Instability in a Rapidly
Rotating Star | Expanded version to be published in Phys. Rev. D: 13 pages, REVTeX,
13 figures, 9 TeX input files | Phys.Rev.D62:084024,2000 | 10.1103/PhysRevD.62.084024 | null | gr-qc astro-ph | null | A rapidly rotating, axisymmetric star can be dynamically unstable to an m=2
"bar" mode that transforms the star from a disk shape to an elongated bar. The
fate of such a bar-shaped star is uncertain. Some previous numerical studies
indicate that the bar is short lived, lasting for only a few bar-rotation
periods, whi... | [
{
"created": "Sat, 1 Apr 2000 03:21:53 GMT",
"version": "v1"
},
{
"created": "Tue, 11 Jul 2000 20:27:53 GMT",
"version": "v2"
}
] | 2010-11-19 | [
[
"Brown",
"David",
""
]
] | A rapidly rotating, axisymmetric star can be dynamically unstable to an m=2 "bar" mode that transforms the star from a disk shape to an elongated bar. The fate of such a bar-shaped star is uncertain. Some previous numerical studies indicate that the bar is short lived, lasting for only a few bar-rotation periods, while... |
gr-qc/9411034 | Neil Cornish | Neil J. Cornish and Janna J. Levin | Remarks about Static Back-Reaction on Black Hole Spacetimes | 7 pages, LaTeX, one figure appended as a uuencoded and compressed
postscript file | null | null | UTPT-94-29, CITA-94-47 | gr-qc | null | Recently, it has been claimed that the back reaction of vacuum polarization
on a black hole spacetime naturally regularizes infinities in the black hole
entropy. We examine the back reaction calculation and find no such
short-distance cut-off,in contradiction with these recent claims. Moreover, the
intuitive expectat... | [
{
"created": "Sun, 13 Nov 1994 23:12:14 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Cornish",
"Neil J.",
""
],
[
"Levin",
"Janna J.",
""
]
] | Recently, it has been claimed that the back reaction of vacuum polarization on a black hole spacetime naturally regularizes infinities in the black hole entropy. We examine the back reaction calculation and find no such short-distance cut-off,in contradiction with these recent claims. Moreover, the intuitive expectatio... |
1607.03784 | Jorge P\'aramos | Riccardo March, Jorge P\'aramos, Orfeu Bertolami, Simone Dell'Agnello | The 1/c expansion of nonminimally coupled curvature-matter gravity model
and constraints from planetary precession | 21 pages, 7 figures | Phys. Rev. D 95, 024017 (2017) | 10.1103/PhysRevD.95.024017 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The effects of a nonminimally coupled curvature-matter model of gravity on a
perturbed Minkowski metric are presented. The action functional of the model
involves two functions $f^1(R)$ and $f^2(R)$ of the Ricci scalar curvature $R$.
This work expands upon previous results, extending the framework developed
there to ... | [
{
"created": "Thu, 7 Jul 2016 13:35:46 GMT",
"version": "v1"
}
] | 2017-01-18 | [
[
"March",
"Riccardo",
""
],
[
"Páramos",
"Jorge",
""
],
[
"Bertolami",
"Orfeu",
""
],
[
"Dell'Agnello",
"Simone",
""
]
] | The effects of a nonminimally coupled curvature-matter model of gravity on a perturbed Minkowski metric are presented. The action functional of the model involves two functions $f^1(R)$ and $f^2(R)$ of the Ricci scalar curvature $R$. This work expands upon previous results, extending the framework developed there to co... |
gr-qc/0105040 | Leor Barack | Leor Barack | Gravitational self force by mode sum regularization | Latex, 19 pages, accepted for publication in PRD | Phys.Rev. D64 (2001) 084021 | 10.1103/PhysRevD.64.084021 | null | gr-qc | null | We propose a practical scheme for calculating the local gravitational
self-force experienced by a test mass particle moving in a black hole
spacetime. The method---equally effective for either weak or strong field
orbits---employs the {\em mode-sum regularization scheme} previously developed
for a scalar toy model. T... | [
{
"created": "Fri, 11 May 2001 15:03:20 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Aug 2001 11:40:27 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Barack",
"Leor",
""
]
] | We propose a practical scheme for calculating the local gravitational self-force experienced by a test mass particle moving in a black hole spacetime. The method---equally effective for either weak or strong field orbits---employs the {\em mode-sum regularization scheme} previously developed for a scalar toy model. The... |
2011.13906 | Thiago Guimar\~aes | T. M. Guimar\~aes, R. de C. Lima, S. H. Pereira | Cosmological inflation driven by a scalar torsion function | 8 pages, 2 figures, submitted to EPJC | The European Physical Journal C (2021) | 10.1140/epjc/s10052-021-09076-x | 81, Article number: 271 (2021) | gr-qc | http://creativecommons.org/licenses/by-nc-nd/4.0/ | A viable model for inflation driven by a torsion function in a Friedmann
background is presented. The scalar spectral index in the interval
$0.92\lesssim n_{s}\lesssim 0.97$ is obtained in order to satisfy the initial
conditions for inflation. The post inflationary phase is also studied, and the
analytical solutions ... | [
{
"created": "Fri, 27 Nov 2020 18:47:16 GMT",
"version": "v1"
}
] | 2022-09-22 | [
[
"Guimarães",
"T. M.",
""
],
[
"Lima",
"R. de C.",
""
],
[
"Pereira",
"S. H.",
""
]
] | A viable model for inflation driven by a torsion function in a Friedmann background is presented. The scalar spectral index in the interval $0.92\lesssim n_{s}\lesssim 0.97$ is obtained in order to satisfy the initial conditions for inflation. The post inflationary phase is also studied, and the analytical solutions ob... |
0711.0612 | Tolga Birkandan | T. Birkandan, M. Hortacsu | Singularity Structure and Stability Analysis of the Dirac Equation on
the Boundary of the Nutku Helicoid Solution | Version to appear in JMP | J.Math.Phys.49:054101,2008 | 10.1063/1.2913520 | null | gr-qc math-ph math.MP | null | Dirac equation written on the boundary of the Nutku helicoid space consists
of a system of ordinary differential equations. We tried to analyze this system
and we found that it has a higher singularity than those of the Heun's
equations which give the solutions of the Dirac equation in the bulk. We also
lose an indep... | [
{
"created": "Mon, 5 Nov 2007 11:23:08 GMT",
"version": "v1"
},
{
"created": "Mon, 19 Nov 2007 12:50:06 GMT",
"version": "v2"
},
{
"created": "Mon, 7 Apr 2008 06:57:44 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Birkandan",
"T.",
""
],
[
"Hortacsu",
"M.",
""
]
] | Dirac equation written on the boundary of the Nutku helicoid space consists of a system of ordinary differential equations. We tried to analyze this system and we found that it has a higher singularity than those of the Heun's equations which give the solutions of the Dirac equation in the bulk. We also lose an indepen... |
gr-qc/0402088 | Jean-Paul Mbelek | J.P. Mbelek | A scalar field modelling of the rotational curves of spiral galaxies | 6 pages, poster presented at the symposium "The Dark Universe :
Matter, Energy, and Gravity", 2 - 5 April 2001, Space Telescope Science
Institute, Baltimore (USA, edited by M. Livio) | null | null | null | gr-qc astro-ph | null | In a previous work \cite{mbeleka}, we have modelled the rotation curves (RC)
of spiral galaxies by including in the equation of motion dynamical terms from
an external real self-interacting scalar field, $\phi$, minimally coupled to
gravity and which respects the equivalence principle in the absence of
electromagneti... | [
{
"created": "Fri, 20 Feb 2004 13:38:28 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Mbelek",
"J. P.",
""
]
] | In a previous work \cite{mbeleka}, we have modelled the rotation curves (RC) of spiral galaxies by including in the equation of motion dynamical terms from an external real self-interacting scalar field, $\phi$, minimally coupled to gravity and which respects the equivalence principle in the absence of electromagnetic ... |
2312.17335 | Maulik K. Parikh | Maulik Parikh and Francesco Setti | Graviton Noise Correlation in Nearby Detectors | 14 pages, 2 figures, LaTeX | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We consider quantum gravity fluctuations in a pair of nearby gravitational
wave detectors. Quantum fluctuations of long-wavelength modes of the
gravitational field induce coherent fluctuations in the detectors, leading to
correlated noise. We determine the variance and covariance in the lengths of
the arms of the det... | [
{
"created": "Thu, 28 Dec 2023 19:27:15 GMT",
"version": "v1"
}
] | 2024-01-01 | [
[
"Parikh",
"Maulik",
""
],
[
"Setti",
"Francesco",
""
]
] | We consider quantum gravity fluctuations in a pair of nearby gravitational wave detectors. Quantum fluctuations of long-wavelength modes of the gravitational field induce coherent fluctuations in the detectors, leading to correlated noise. We determine the variance and covariance in the lengths of the arms of the detec... |
gr-qc/0610064 | Hideyuki Tagoshi | TAMA Collaboration: T. Akutsu, et al | Results of the search for inspiraling compact star binaries from
TAMA300's observation in 2000-2004 | 8 pages, 4 Postscript figures, uses revtex4.sty The author list was
corrected | Phys.Rev.D74:122002,2006 | 10.1103/PhysRevD.74.122002 | OU-TAP 271 | gr-qc astro-ph | null | We analyze the data of TAMA300 detector to search for gravitational waves
from inspiraling compact star binaries with masses of the component stars in
the range 1-3Msolar. In this analysis, 2705 hours of data, taken during the
years 2000-2004, are used for the event search. We combine the results of
different observa... | [
{
"created": "Thu, 12 Oct 2006 09:29:56 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Oct 2006 08:55:12 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"TAMA Collaboration",
"",
""
],
[
"Akutsu",
"T.",
""
]
] | We analyze the data of TAMA300 detector to search for gravitational waves from inspiraling compact star binaries with masses of the component stars in the range 1-3Msolar. In this analysis, 2705 hours of data, taken during the years 2000-2004, are used for the event search. We combine the results of different observati... |
1709.06058 | Lukas Weih | Lukas R. Weih, Elias R. Most and Luciano Rezzolla | On the stability and maximum mass of differentially rotating
relativistic stars | 5 pages, 7 figures, matches accepted version in MNRAS | Mon. Not. R. Astron. Soc., 473:L128-L130, 2018 | 10.1093/mnrasl/slx178 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The stability properties of rotating relativistic stars against prompt
gravitational collapse to a black hole are rather well understood for uniformly
rotating models. This is not the case for differentially rotating neutron
stars, which are expected to be produced in catastrophic events such as the
merger of binary ... | [
{
"created": "Mon, 18 Sep 2017 17:28:56 GMT",
"version": "v1"
},
{
"created": "Mon, 6 Nov 2017 12:03:56 GMT",
"version": "v2"
}
] | 2018-01-12 | [
[
"Weih",
"Lukas R.",
""
],
[
"Most",
"Elias R.",
""
],
[
"Rezzolla",
"Luciano",
""
]
] | The stability properties of rotating relativistic stars against prompt gravitational collapse to a black hole are rather well understood for uniformly rotating models. This is not the case for differentially rotating neutron stars, which are expected to be produced in catastrophic events such as the merger of binary sy... |
gr-qc/0101007 | Kechkin O. V. | Alfredo Herrera-Aguilar, Oleg V. Kechkin | Bosonic string - Kaluza Klein theory exact solutions using 5D-6D
dualities | 13 pages in LaTex | Mod.Phys.Lett. A16 (2001) 29-40 | 10.1142/S0217732301002857 | null | gr-qc | null | We present the explicit formulae which allow to transform the general
solution of the 6D Kaluza--Klein theory on a 3--torus into the special solution
of the 6D bosonic string theory on a 3--torus as well as into the general
solution of the 5D bosonic string theory on a 2--torus. We construct a new
family of the extre... | [
{
"created": "Sun, 31 Dec 2000 18:41:53 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Herrera-Aguilar",
"Alfredo",
""
],
[
"Kechkin",
"Oleg V.",
""
]
] | We present the explicit formulae which allow to transform the general solution of the 6D Kaluza--Klein theory on a 3--torus into the special solution of the 6D bosonic string theory on a 3--torus as well as into the general solution of the 5D bosonic string theory on a 2--torus. We construct a new family of the extrema... |
2112.00091 | Alexander Jercher | Alexander F. Jercher, Daniele Oriti, Andreas G. A. Pithis | Emergent Cosmology from Quantum Gravity in the Lorentzian Barrett-Crane
Tensorial Group Field Theory Model | 37+16 pages, 1 figure | JCAP01(2022)050 | 10.1088/1475-7516/2022/01/050 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the cosmological sector of the Lorentzian Barrett-Crane (BC) model
coupled to a free massless scalar field in its Group Field Theory (GFT)
formulation, corresponding to the mean-field hydrodynamics obtained from
coherent condensate states. The relational evolution of the condensate with
respect to the scalar... | [
{
"created": "Tue, 30 Nov 2021 20:47:30 GMT",
"version": "v1"
},
{
"created": "Fri, 28 Jan 2022 10:08:02 GMT",
"version": "v2"
}
] | 2022-01-31 | [
[
"Jercher",
"Alexander F.",
""
],
[
"Oriti",
"Daniele",
""
],
[
"Pithis",
"Andreas G. A.",
""
]
] | We study the cosmological sector of the Lorentzian Barrett-Crane (BC) model coupled to a free massless scalar field in its Group Field Theory (GFT) formulation, corresponding to the mean-field hydrodynamics obtained from coherent condensate states. The relational evolution of the condensate with respect to the scalar f... |
gr-qc/0503023 | Yongge Ma | You Ding, Yongge Ma, Muxin Han, Jianbing Shao | Palatini Formalism of 5-Dimensional Kaluza-Klein Theory | 10 pages | Mod.Phys.Lett. A20 (2005) 345-354 | 10.1142/S0217732305015689 | null | gr-qc | null | The Einstein field equations can be derived in $n$ dimensions ($n>2$) by the
variations of the Palatini action. The Killing reduction of 5-dimensional
Palatini action is studied on the assumption that pentads and Lorentz
connections are preserved by the Killing vector field. A Palatini formalism of
4-dimensional acti... | [
{
"created": "Sat, 5 Mar 2005 04:02:41 GMT",
"version": "v1"
}
] | 2009-11-11 | [
[
"Ding",
"You",
""
],
[
"Ma",
"Yongge",
""
],
[
"Han",
"Muxin",
""
],
[
"Shao",
"Jianbing",
""
]
] | The Einstein field equations can be derived in $n$ dimensions ($n>2$) by the variations of the Palatini action. The Killing reduction of 5-dimensional Palatini action is studied on the assumption that pentads and Lorentz connections are preserved by the Killing vector field. A Palatini formalism of 4-dimensional action... |
2305.00459 | Sattha Phalungsongsathit | Petarpa Boonserm, Sattha Phalungsongsathit, Kunlapat Sansuk, Pitayuth
Wongjun | Greybody factors for massive scalar field emitted from black holes in
dRGT massive gravity | 22 pages, 19 figures | null | 10.1140/epjc/s10052-023-11843-x | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Greybody factors are transmission probabilities of the Hawking radiation,
which are emitted from black holes and can be obtained from the gravitational
potential of black holes. The de Rham, Gabadadze, and Tolly (dRGT) massive
gravity is one of the gravity theories that modified general relativity. In
this paper, we ... | [
{
"created": "Sun, 30 Apr 2023 11:54:32 GMT",
"version": "v1"
}
] | 2023-08-09 | [
[
"Boonserm",
"Petarpa",
""
],
[
"Phalungsongsathit",
"Sattha",
""
],
[
"Sansuk",
"Kunlapat",
""
],
[
"Wongjun",
"Pitayuth",
""
]
] | Greybody factors are transmission probabilities of the Hawking radiation, which are emitted from black holes and can be obtained from the gravitational potential of black holes. The de Rham, Gabadadze, and Tolly (dRGT) massive gravity is one of the gravity theories that modified general relativity. In this paper, we in... |
1712.00697 | Jos\'e Fernando de Jesus | J. F. Jesus | Exact Solution for Flat Scale-Invariant Cosmology | Letter. 3 pages, 2 figures. Changed format for journal submission in
new version | null | null | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An exact solution for the spatially flat scale-invariant Cosmology, recently
proposed by Maeder (2017) is deduced. No deviation from the numerical solution
was detected. The exact solution yields transparency for the dynamical
equations and faster cosmological constraints may be performed.
| [
{
"created": "Sun, 3 Dec 2017 02:14:11 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Dec 2017 13:12:46 GMT",
"version": "v2"
},
{
"created": "Mon, 26 Feb 2018 16:57:42 GMT",
"version": "v3"
}
] | 2018-02-27 | [
[
"Jesus",
"J. F.",
""
]
] | An exact solution for the spatially flat scale-invariant Cosmology, recently proposed by Maeder (2017) is deduced. No deviation from the numerical solution was detected. The exact solution yields transparency for the dynamical equations and faster cosmological constraints may be performed. |
gr-qc/0012029 | Fredrick A. Jenet | F. A. Jenet and T. A. Prince | Detection of variable frequency signals using a fast chirp transform | null | Phys.Rev.D62:122001,2000 | 10.1103/PhysRevD.62.122001 | null | gr-qc | null | The detection of signals with varying frequency is important in many areas of
physics and astrophysics. The current work was motivated by a desire to detect
gravitational waves from the binary inspiral of neutron stars and black holes,
a topic of significant interest for the new generation of interferometric
gravitat... | [
{
"created": "Thu, 7 Dec 2000 07:35:45 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Jenet",
"F. A.",
""
],
[
"Prince",
"T. A.",
""
]
] | The detection of signals with varying frequency is important in many areas of physics and astrophysics. The current work was motivated by a desire to detect gravitational waves from the binary inspiral of neutron stars and black holes, a topic of significant interest for the new generation of interferometric gravitatio... |
2311.12117 | Matthew Mould | Matthew Mould, Christopher J. Moore, Davide Gerosa | Calibrating signal-to-noise ratio detection thresholds using
gravitational-wave catalogs | 10 pages, 5 main figures (2 appendix figures) | Phys. Rev. D 109, 063013 (2024) | 10.1103/PhysRevD.109.063013 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Searching for gravitational-wave signals is a challenging and computationally
intensive endeavor undertaken by multiple independent analysis pipelines. While
detection depends only on observed noisy data, it is sometimes inconsistently
defined in terms of source parameters that in reality are unknown, e.g., by
placin... | [
{
"created": "Mon, 20 Nov 2023 19:00:38 GMT",
"version": "v1"
},
{
"created": "Wed, 13 Mar 2024 21:17:13 GMT",
"version": "v2"
}
] | 2024-03-15 | [
[
"Mould",
"Matthew",
""
],
[
"Moore",
"Christopher J.",
""
],
[
"Gerosa",
"Davide",
""
]
] | Searching for gravitational-wave signals is a challenging and computationally intensive endeavor undertaken by multiple independent analysis pipelines. While detection depends only on observed noisy data, it is sometimes inconsistently defined in terms of source parameters that in reality are unknown, e.g., by placing ... |
2206.01940 | Ali Alavi | S.A. Alavi and T. Fallahi. Serish | Neutrino spin oscillations in gravitational fields in higher dimensions | 12 pages. Replaced with the version published in Modern Physics
Letters A | Modern Physics Letters A, Vol. 37, No. 30, 2250200 (2022) | 10.1142/S0217732322502005 | null | gr-qc astro-ph.HE hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | Neutrino physics in one of the most active fields of research with important
implications for particle physics, cosmology and astrophysics. On the other
hand, motivated by some theories including string theory, formulation of
physical theories in more than four space-time dimensions has been the subject
of increasing... | [
{
"created": "Sat, 4 Jun 2022 08:35:52 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Jan 2023 07:23:18 GMT",
"version": "v2"
}
] | 2023-01-18 | [
[
"Alavi",
"S. A.",
""
],
[
"Serish",
"T. Fallahi.",
""
]
] | Neutrino physics in one of the most active fields of research with important implications for particle physics, cosmology and astrophysics. On the other hand, motivated by some theories including string theory, formulation of physical theories in more than four space-time dimensions has been the subject of increasing a... |
2002.11718 | Ahmad Sheykhi | Ahmad Sheykhi | Mimetic Black Strings | 21 pages, Accepted by JHEP | JHEP 07 (2020) 031 | 10.1007/JHEP07(2020)031 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We present two new classes of black string solutions in the context of
mimetic gravity. The horizon topology of these solutions can be either a flat
$T^2$ torus with topology $S^1 \times S^1$, or a standard cylindrical model
with topology $R\times S^1$. The first class describes uncharged rotating black
string which ... | [
{
"created": "Wed, 26 Feb 2020 15:54:40 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Mar 2020 16:17:06 GMT",
"version": "v2"
},
{
"created": "Sat, 13 Jun 2020 09:02:00 GMT",
"version": "v3"
}
] | 2020-10-21 | [
[
"Sheykhi",
"Ahmad",
""
]
] | We present two new classes of black string solutions in the context of mimetic gravity. The horizon topology of these solutions can be either a flat $T^2$ torus with topology $S^1 \times S^1$, or a standard cylindrical model with topology $R\times S^1$. The first class describes uncharged rotating black string which it... |
2001.07018 | Ion I. Cotaescu | Ion I. Cotaescu | Rest frame vacuum of the Proca field on the de Sitter expanding universe | 15 pages, no figures | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The general plane wave solutions of the Proca field in conformal charts of
the de Sitter expanding universe are derived for arbitrary polarizations
showing how the frequencies can be separated in rest frames, defining thus the
rest frame vacuum of this field.
| [
{
"created": "Mon, 20 Jan 2020 08:43:35 GMT",
"version": "v1"
}
] | 2020-01-22 | [
[
"Cotaescu",
"Ion I.",
""
]
] | The general plane wave solutions of the Proca field in conformal charts of the de Sitter expanding universe are derived for arbitrary polarizations showing how the frequencies can be separated in rest frames, defining thus the rest frame vacuum of this field. |
1702.04568 | Borja Reina | Borja Reina, Nicolas Sanchis-Gual, Ra\"ul Vera, Jos\'e A. Font | Completion of the universal I-Love-Q relations in compact stars
including the mass | 6 pages, 2 figures. Accepted for publication in MNRAS | null | 10.1093/mnrasl/slx078 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In a recent paper we applied a rigorous perturbed matching framework to show
the amendment of the mass of rotating stars in Hartle's model. Here, we apply
this framework to the tidal problem in binary systems. Our approach fully
accounts for the correction to the Love numbers needed to obtain the universal
$I$-Love-$... | [
{
"created": "Wed, 15 Feb 2017 12:09:14 GMT",
"version": "v1"
},
{
"created": "Mon, 15 May 2017 14:45:16 GMT",
"version": "v2"
}
] | 2017-07-26 | [
[
"Reina",
"Borja",
""
],
[
"Sanchis-Gual",
"Nicolas",
""
],
[
"Vera",
"Raül",
""
],
[
"Font",
"José A.",
""
]
] | In a recent paper we applied a rigorous perturbed matching framework to show the amendment of the mass of rotating stars in Hartle's model. Here, we apply this framework to the tidal problem in binary systems. Our approach fully accounts for the correction to the Love numbers needed to obtain the universal $I$-Love-$Q$... |
2206.06601 | Amarkumar Agrawal | A.S. Agrawal, B. Mishra, S.K. Tripathy | Observationally constrained accelerating cosmological model with higher
power of non-metricity and squared trace | 14 pages, 9 figures | Journal of High Energy Astrophysics, 38, 2023, 41-48 | 10.1016/j.jheap.2023.04.001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, a cosmological model of the Universe is presented in $f(Q,T)$
gravity and the parameters are constrained by cosmological data sets.
Initially, a generalised form of $f(Q,T)$ model is used as $f(Q,T)=-\lambda_{1}
Q^{m}-\lambda_{2} T^2$, where $\lambda_{1}$, $\lambda_{2}$ and $m$ are model
parameters. Wi... | [
{
"created": "Tue, 14 Jun 2022 05:43:38 GMT",
"version": "v1"
},
{
"created": "Wed, 10 May 2023 12:29:16 GMT",
"version": "v2"
}
] | 2024-03-21 | [
[
"Agrawal",
"A. S.",
""
],
[
"Mishra",
"B.",
""
],
[
"Tripathy",
"S. K.",
""
]
] | In this paper, a cosmological model of the Universe is presented in $f(Q,T)$ gravity and the parameters are constrained by cosmological data sets. Initially, a generalised form of $f(Q,T)$ model is used as $f(Q,T)=-\lambda_{1} Q^{m}-\lambda_{2} T^2$, where $\lambda_{1}$, $\lambda_{2}$ and $m$ are model parameters. With... |
1506.01869 | Thomas-Paul Hack | Thomas-Paul Hack | Cosmological Applications of Algebraic Quantum Field Theory in Curved
Spacetimes | 123 pages, 4 figures, to appear as SpringerBriefs in Mathematical
Physics | null | null | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This monograph provides a largely self--contained and broadly accessible
exposition of two cosmological applications of algebraic quantum field theory
(QFT) in curved spacetime: a fundamental analysis of the cosmological evolution
according to the Standard Model of Cosmology and a fundamental study of the
perturbatio... | [
{
"created": "Fri, 5 Jun 2015 11:27:33 GMT",
"version": "v1"
}
] | 2015-06-08 | [
[
"Hack",
"Thomas-Paul",
""
]
] | This monograph provides a largely self--contained and broadly accessible exposition of two cosmological applications of algebraic quantum field theory (QFT) in curved spacetime: a fundamental analysis of the cosmological evolution according to the Standard Model of Cosmology and a fundamental study of the perturbations... |
1403.1014 | Behrouz Mirza | Mohamadreza Fazel, Behrouz Mirza, Seyed Ali Hosseini Mansoori | Black hole temperature: minimal coupling vs conformal coupling | 20 pages, 1 figure, references added | Annals of Physics 344 (2014) 232-252 | 10.1016/j.aop.2014.02.020 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article, we discuss the propagation of scalar fields in conformally
transformed spacetimes with either minimal or conformal coupling. The
conformally coupled equation of motion is transformed into a one-dimensional
Schr\"{o}dinger-like equation with an invariant potential under conformal
transformation. In a ... | [
{
"created": "Wed, 5 Mar 2014 06:32:17 GMT",
"version": "v1"
},
{
"created": "Sat, 14 Jun 2014 09:40:53 GMT",
"version": "v2"
}
] | 2015-06-19 | [
[
"Fazel",
"Mohamadreza",
""
],
[
"Mirza",
"Behrouz",
""
],
[
"Mansoori",
"Seyed Ali Hosseini",
""
]
] | In this article, we discuss the propagation of scalar fields in conformally transformed spacetimes with either minimal or conformal coupling. The conformally coupled equation of motion is transformed into a one-dimensional Schr\"{o}dinger-like equation with an invariant potential under conformal transformation. In a se... |
1408.2689 | Manuel Rodrigues | M. E. Rodrigues, A. V. Kpadonou, F. Rahaman, P. J. Oliveira and M. J.
S. Houndjo | Bianchi type-I, type-III and Kantowski-Sachs solutions in f(T) gravity | 19 pages, 3 figures | Astrophys Space Sci (2015) 357:129 | 10.1007/s10509-015-2358-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the context of modified tele-parallel theory of gravity, we undertake
cosmological anisotropic models and search for their solutions. Within a
suitable choice of non-diagonal tetrads, the decoupled equations of motion are
obtained for Bianchi-I, Bianchi-III and Kantowski-Sachs models, from which we
obtain the corr... | [
{
"created": "Tue, 12 Aug 2014 10:55:25 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Rodrigues",
"M. E.",
""
],
[
"Kpadonou",
"A. V.",
""
],
[
"Rahaman",
"F.",
""
],
[
"Oliveira",
"P. J.",
""
],
[
"Houndjo",
"M. J. S.",
""
]
] | In the context of modified tele-parallel theory of gravity, we undertake cosmological anisotropic models and search for their solutions. Within a suitable choice of non-diagonal tetrads, the decoupled equations of motion are obtained for Bianchi-I, Bianchi-III and Kantowski-Sachs models, from which we obtain the corres... |
2008.09957 | Chinmay Kalaghatgi Mr. | Chinmay Kalaghatgi and Mark Hannam | Investigating the effect of in-plane spin directions for Precessing BBH
systems | 13 pages, 8 figures | Phys. Rev. D 103, 024024 (2021) | 10.1103/PhysRevD.103.024024 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Morphology of coalescing BBH waveforms are affected by its spins. Waveform
models built for inference of source parameters have several in-built
approximations. In current precessing IMRPhenom and SEOBNR waveform models,
systems with the same spin magnitude but varying orientation of spins projected
on the orbital pl... | [
{
"created": "Sun, 23 Aug 2020 04:48:57 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Jan 2021 05:40:37 GMT",
"version": "v2"
}
] | 2021-01-28 | [
[
"Kalaghatgi",
"Chinmay",
""
],
[
"Hannam",
"Mark",
""
]
] | Morphology of coalescing BBH waveforms are affected by its spins. Waveform models built for inference of source parameters have several in-built approximations. In current precessing IMRPhenom and SEOBNR waveform models, systems with the same spin magnitude but varying orientation of spins projected on the orbital plan... |
gr-qc/9406016 | null | P. Menotti and D. Seminara | Energy Theorem for 2+1 dimensional gravity | (Revtex), 24 pages,MIT-CTP#2324 snd IFUP-TH-33/94 | Annals Phys. 240 (1995) 203-221 | 10.1006/aphy.1995.1044 | null | gr-qc hep-th | null | We prove a positive energy theorem in 2+1 dimensional gravity for open
universes and any matter energy-momentum tensor satisfying the dominant energy
condition. We consider on the space-like initial value surface a family of
widening Wilson loops and show that the energy-momentum of the enclosed
subsystem is a future... | [
{
"created": "Wed, 8 Jun 1994 21:49:33 GMT",
"version": "v1"
}
] | 2009-10-22 | [
[
"Menotti",
"P.",
""
],
[
"Seminara",
"D.",
""
]
] | We prove a positive energy theorem in 2+1 dimensional gravity for open universes and any matter energy-momentum tensor satisfying the dominant energy condition. We consider on the space-like initial value surface a family of widening Wilson loops and show that the energy-momentum of the enclosed subsystem is a future d... |
1209.5232 | Mustapha Azreg-A\"inou | Mustapha Azreg-A\"inou | Light paths of normal and phantom Einstein-Maxwell-dilaton black holes | 30 pages, 14 figures (with 7 captions), minor corrections | Phys. Rev. D 87, 024012 (2013) | 10.1103/PhysRevD.87.024012 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Null geodesics of normal and phantom Einstein-Maxwell-dilaton black holes are
determined analytically by the Weierstrass elliptic functions. The black hole
parameters other than the mass enter, with the appropriate signs, the formula
for the angle of deflection to the second order in the inverse of the impact
paramet... | [
{
"created": "Mon, 24 Sep 2012 11:34:21 GMT",
"version": "v1"
},
{
"created": "Mon, 24 Dec 2012 14:22:48 GMT",
"version": "v2"
},
{
"created": "Mon, 7 Jan 2013 17:51:50 GMT",
"version": "v3"
}
] | 2013-01-08 | [
[
"Azreg-Aïnou",
"Mustapha",
""
]
] | Null geodesics of normal and phantom Einstein-Maxwell-dilaton black holes are determined analytically by the Weierstrass elliptic functions. The black hole parameters other than the mass enter, with the appropriate signs, the formula for the angle of deflection to the second order in the inverse of the impact parameter... |
1202.2830 | Manuel Rodrigues | Deborah F. Jardim, Manuel E. Rodrigues and M. J. S. Houndjo | Thermodynamics of phantom Reissner-Nordstrom-AdS black hole | 13 pages, 11 figures | Eur. Phys. J. Plus 127: 123 (2012) | 10.1140/epjp/i2012-12123-x | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain a new solution of the Einstein-anti-Maxwell theory with
cosmological constant, called anti-Reissner-Nordstrom-(A)de Sitter
(anti-RN-(A)dS) solution. The basic properties of this solution is reviewed.
Its thermodynamics is consistently established, with the extreme cases and
phase transitions, where the anal... | [
{
"created": "Mon, 13 Feb 2012 19:53:21 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Feb 2012 13:28:23 GMT",
"version": "v2"
},
{
"created": "Wed, 3 Oct 2012 19:53:21 GMT",
"version": "v3"
}
] | 2012-10-04 | [
[
"Jardim",
"Deborah F.",
""
],
[
"Rodrigues",
"Manuel E.",
""
],
[
"Houndjo",
"M. J. S.",
""
]
] | We obtain a new solution of the Einstein-anti-Maxwell theory with cosmological constant, called anti-Reissner-Nordstrom-(A)de Sitter (anti-RN-(A)dS) solution. The basic properties of this solution is reviewed. Its thermodynamics is consistently established, with the extreme cases and phase transitions, where the analys... |
2109.00056 | Thomas Osburn | Jonathan McCart and Thomas Osburn and Justin Y. J. Burton | Highly eccentric EMRI waveforms via fast self-forced inspirals | 14 pages, 8 figures, updated to more closely match published version | Phys. Rev. D 104, 084050 (2021) | 10.1103/PhysRevD.104.084050 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present new developments and comparisons of competing inspiral and
waveform models for highly eccentric non-spinning extreme and intermediate
mass-ratio inspirals (EMRIs and IMRIs). Starting from our high eccentricity
self-force library, we apply the near-identity transform (NIT) technique to
rapidly compute highl... | [
{
"created": "Tue, 31 Aug 2021 19:42:17 GMT",
"version": "v1"
},
{
"created": "Wed, 13 Oct 2021 21:45:31 GMT",
"version": "v2"
}
] | 2021-10-15 | [
[
"McCart",
"Jonathan",
""
],
[
"Osburn",
"Thomas",
""
],
[
"Burton",
"Justin Y. J.",
""
]
] | We present new developments and comparisons of competing inspiral and waveform models for highly eccentric non-spinning extreme and intermediate mass-ratio inspirals (EMRIs and IMRIs). Starting from our high eccentricity self-force library, we apply the near-identity transform (NIT) technique to rapidly compute highly ... |
1412.1662 | Giovanni Manfredi | Giovanni Manfredi | The Schr\"odinger-Newton equations beyond Newton | To appear in General Relativity and Gravitation | null | 10.1007/s10714-014-1846-4 | null | gr-qc quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The scope of this paper is twofold. First, we derive rigorously a
low-velocity and Galilei-covariant limit of the gravitoelectromagnetic (GEM)
equations. Subsequently, these reduced GEM equations are coupled to the
Schr\"odinger equation with gravitoelectric and gravitomagnetic potentials. The
resulting extended Schr... | [
{
"created": "Thu, 4 Dec 2014 13:37:42 GMT",
"version": "v1"
}
] | 2015-06-23 | [
[
"Manfredi",
"Giovanni",
""
]
] | The scope of this paper is twofold. First, we derive rigorously a low-velocity and Galilei-covariant limit of the gravitoelectromagnetic (GEM) equations. Subsequently, these reduced GEM equations are coupled to the Schr\"odinger equation with gravitoelectric and gravitomagnetic potentials. The resulting extended Schr\"... |
2203.12766 | Yurii Ignat'ev | Yu. G. Ignat'ev, A.A. Agathonov and D. Yu. Ignatyev | Cosmological evolution of a statistical system of degenerate scalar
charged fermions with an asymmetric scalar doublet. II. One-component system
of doubly charged fermions | 15 pages, 15 figures, 22 references. arXiv admin note: text overlap
with arXiv:2203.11946 | Gravit. Cosmol. 28 (2022) 10 | 10.1134/S0202289322010066 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on the previously formulated mathematical model of a statistical system
with scalar interaction of fermions, a cosmological model based on a
one-component statistical system of doubly scalar charged degenerate fermions
interacting with an asymmetric scalar doublet-canonical and phantom scalar
fields-is studied.... | [
{
"created": "Tue, 22 Mar 2022 16:28:29 GMT",
"version": "v1"
}
] | 2022-03-25 | [
[
"Ignat'ev",
"Yu. G.",
""
],
[
"Agathonov",
"A. A.",
""
],
[
"Ignatyev",
"D. Yu.",
""
]
] | Based on the previously formulated mathematical model of a statistical system with scalar interaction of fermions, a cosmological model based on a one-component statistical system of doubly scalar charged degenerate fermions interacting with an asymmetric scalar doublet-canonical and phantom scalar fields-is studied. T... |
gr-qc/0205113 | K. H. Mariwalla | K. H. Mariwalla | Gravity sans singularities | 7 pages | null | null | null | gr-qc hep-th | null | Basis and limitations of singularity theorems for Gravity are examined. As
singularity is a critical situation in course of time, study of time paths, in
full generality of Equivalence principle, provides two mechanisms to prevent
singularity. Resolution of singular Time translation generators into space of
its orbit... | [
{
"created": "Tue, 28 May 2002 10:41:35 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Mariwalla",
"K. H.",
""
]
] | Basis and limitations of singularity theorems for Gravity are examined. As singularity is a critical situation in course of time, study of time paths, in full generality of Equivalence principle, provides two mechanisms to prevent singularity. Resolution of singular Time translation generators into space of its orbits,... |
gr-qc/9404033 | M. Rainer | M. Rainer | Conformal Coupling and Invariance in Different Dimensions | revised version (accepted by Int. J. Mod. Phys. D, ed.: A. Ashtekar,
2-Nov-94), 23 pages, LATEX, Uni Potsdam MATH-94/02 | Int.J.Mod.Phys. D4 (1995) 397-416 | 10.1142/S0218271895000302 | null | gr-qc hep-th | null | Conformal transformations of the following kinds are compared: (1) conformal
coordinate transformations, (2) conformal transformations of Lagrangian models
for a D-dimensional geometry, given by a Riemannian manifold M with metric g of
arbitrary signature, and (3) conformal transformations of (mini-)superspace
geomet... | [
{
"created": "Sun, 17 Apr 1994 19:02:04 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Nov 1994 21:30:41 GMT",
"version": "v2"
}
] | 2009-10-22 | [
[
"Rainer",
"M.",
""
]
] | Conformal transformations of the following kinds are compared: (1) conformal coordinate transformations, (2) conformal transformations of Lagrangian models for a D-dimensional geometry, given by a Riemannian manifold M with metric g of arbitrary signature, and (3) conformal transformations of (mini-)superspace geometry... |
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