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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1708.01969 | Katsuki Aoki | Katsuki Aoki and Shinji Mukohyama | Massive graviton dark matter with environment dependent mass: A natural
explanation of the dark matter-baryon ratio | 13 pages, 6 figures; v2: references added, published version | Phys. Rev. D 96, 104039 (2017) | 10.1103/PhysRevD.96.104039 | YITP-17-81, IPMU17-0106, WU-AP/1703/17 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a scenario that can naturally explain the observed dark
matter-baryon ratio in the context of bimetric theory with a chameleon field.
We introduce two additional gravitational degrees of freedom, the massive
graviton and the chameleon field, corresponding to dark matter and dark energy,
respectively. The c... | [
{
"created": "Mon, 7 Aug 2017 02:34:44 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Dec 2017 05:51:37 GMT",
"version": "v2"
}
] | 2017-12-18 | [
[
"Aoki",
"Katsuki",
""
],
[
"Mukohyama",
"Shinji",
""
]
] | We propose a scenario that can naturally explain the observed dark matter-baryon ratio in the context of bimetric theory with a chameleon field. We introduce two additional gravitational degrees of freedom, the massive graviton and the chameleon field, corresponding to dark matter and dark energy, respectively. The cha... |
1506.04148 | Shahar Hod | Shahar Hod | Eigenvalue spectrum of the spheroidal harmonics: A uniform asymptotic
analysis | 5 pages | Physics Letters B 746, 365 (2015) | 10.1016/j.physletb.2015.05.036 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The spheroidal harmonics $S_{lm}(\theta;c)$ have attracted the attention of
both physicists and mathematicians over the years. These special functions play
a central role in the mathematical description of diverse physical phenomena,
including black-hole perturbation theory and wave scattering by nonspherical
objects... | [
{
"created": "Fri, 12 Jun 2015 20:00:31 GMT",
"version": "v1"
}
] | 2015-06-24 | [
[
"Hod",
"Shahar",
""
]
] | The spheroidal harmonics $S_{lm}(\theta;c)$ have attracted the attention of both physicists and mathematicians over the years. These special functions play a central role in the mathematical description of diverse physical phenomena, including black-hole perturbation theory and wave scattering by nonspherical objects. ... |
gr-qc/0407092 | Aleks Kleyn | Aleks Kleyn | Tidal Force in Metric-Affine Gravity | English text - 8 pages; Russian text - 9 pages | Global Journals of Science Frontier Research A, volume 13, issue
1, pages 39 - 55, 2013 | null | null | gr-qc | null | Generalization of an idea may lead to very interesting result. Learning how
torsion influences on tidal force reveals similarity between tidal equation for
geodesic and the Killing equation of second type.
The relationship between tidal acceleration, curvature and torsion gives an
opportunity to measure torsion.
| [
{
"created": "Sat, 24 Jul 2004 03:12:48 GMT",
"version": "v1"
},
{
"created": "Sat, 15 Mar 2008 17:28:52 GMT",
"version": "v2"
}
] | 2013-02-14 | [
[
"Kleyn",
"Aleks",
""
]
] | Generalization of an idea may lead to very interesting result. Learning how torsion influences on tidal force reveals similarity between tidal equation for geodesic and the Killing equation of second type. The relationship between tidal acceleration, curvature and torsion gives an opportunity to measure torsion. |
0801.1334 | Jonathan Feng | Jonathan L. Feng | Collider Physics and Cosmology | 14 pages, plenary talk presented at the 18th International Conference
on General Relativity and Gravitation (GRG18) and the 7th Edoardo Amaldi
Conference on Gravitational Waves (Amaldi7), Sydney, Australia, 8-14 July
2007; published version | Class.Quant.Grav.25:114003,2008 | 10.1088/0264-9381/25/11/114003 | UCI-TR-2008-2 | gr-qc astro-ph.CO hep-ex | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the coming year, the Large Hadron Collider will begin colliding protons at
energies nearly an order of magnitude beyond the current frontier. The LHC
will, of course, provide unprecedented opportunities to discover new particle
physics. Less well-known, however, is that the LHC may also provide insights
about grav... | [
{
"created": "Tue, 8 Jan 2008 23:36:03 GMT",
"version": "v1"
},
{
"created": "Sat, 12 Jul 2008 18:25:17 GMT",
"version": "v2"
}
] | 2009-08-12 | [
[
"Feng",
"Jonathan L.",
""
]
] | In the coming year, the Large Hadron Collider will begin colliding protons at energies nearly an order of magnitude beyond the current frontier. The LHC will, of course, provide unprecedented opportunities to discover new particle physics. Less well-known, however, is that the LHC may also provide insights about gravit... |
1212.1103 | Stefanos Aretakis | Stefanos Aretakis | A note on instabilities of extremal black holes under scalar
perturbations from afar | 14 pages, 8 figures | Class. Quantum Grav. 30 (2013) 095010 | 10.1088/0264-9381/30/9/095010 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In previous work of the author it was shown that instabilities of solutions
to the wave equation develop asymptotically along the event horizon of extremal
Kerr provided a certain expression H of the initial data is non-trivial on the
horizon. In this note we remove this restriction by showing that instabilities
deve... | [
{
"created": "Wed, 5 Dec 2012 17:19:07 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Apr 2013 20:28:33 GMT",
"version": "v2"
}
] | 2015-06-12 | [
[
"Aretakis",
"Stefanos",
""
]
] | In previous work of the author it was shown that instabilities of solutions to the wave equation develop asymptotically along the event horizon of extremal Kerr provided a certain expression H of the initial data is non-trivial on the horizon. In this note we remove this restriction by showing that instabilities develo... |
1802.04438 | Marcus Khuri | Jaroslaw S. Jaracz, Marcus A. Khuri | Bekenstein Bounds, Penrose Inequalities, and Black Hole Formation | 10 pages | Phys. Rev. D 97, 124026 (2018) | 10.1103/PhysRevD.97.124026 | null | gr-qc math-ph math.DG math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A universal geometric inequality for bodies relating energy, size, angular
momentum, and charge is naturally implied by Bekenstein's entropy bounds. We
establish versions of this inequality for axisymmetric bodies satisfying
appropriate energy conditions, thus lending credence to the most general form
of Bekenstein's... | [
{
"created": "Tue, 13 Feb 2018 02:23:09 GMT",
"version": "v1"
}
] | 2018-06-20 | [
[
"Jaracz",
"Jaroslaw S.",
""
],
[
"Khuri",
"Marcus A.",
""
]
] | A universal geometric inequality for bodies relating energy, size, angular momentum, and charge is naturally implied by Bekenstein's entropy bounds. We establish versions of this inequality for axisymmetric bodies satisfying appropriate energy conditions, thus lending credence to the most general form of Bekenstein's b... |
1407.7246 | Ivica Smoli\'c | Benjamin Mesi\'c, Ivica Smoli\'c | Symmetry Inheritance and Jebsen-Birkhoff Theorem | 9 pages; v2: several comments and references added | null | null | ZTF-EP-14-11 | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is known that the Jebsen-Birkhoff theorem is valid for vacuum solutions to
Einstein's equation, as well as some of its generalizations. Using symmetry
inheritance properties we investigate in detail the additional constraints that
fields have to satisfy in order to allow the Jebsen-Birkhoff theorem in the
non-vacu... | [
{
"created": "Sun, 27 Jul 2014 15:28:45 GMT",
"version": "v1"
},
{
"created": "Mon, 18 Aug 2014 20:01:42 GMT",
"version": "v2"
}
] | 2014-08-20 | [
[
"Mesić",
"Benjamin",
""
],
[
"Smolić",
"Ivica",
""
]
] | It is known that the Jebsen-Birkhoff theorem is valid for vacuum solutions to Einstein's equation, as well as some of its generalizations. Using symmetry inheritance properties we investigate in detail the additional constraints that fields have to satisfy in order to allow the Jebsen-Birkhoff theorem in the non-vacuum... |
1807.11875 | Fil Simovic | Fil Simovic and Robert. B. Mann | Critical Phenomena of Charged de Sitter Black Holes in Cavities | 19 pages, 7 figures | null | 10.1088/1361-6382/aaf445 | null | gr-qc | http://creativecommons.org/publicdomain/zero/1.0/ | We examine the thermodynamic behaviour of four-dimensional charged and
uncharged de Sitter black holes enclosed in an isothermal cavity, in the
extended phase space where the cosmological constant is treated as a
thermodynamic pressure. We demonstrate the presence of a novel
pressure-dependent phase transition in a c... | [
{
"created": "Tue, 31 Jul 2018 15:38:51 GMT",
"version": "v1"
}
] | 2019-05-22 | [
[
"Simovic",
"Fil",
""
],
[
"Mann",
"Robert. B.",
""
]
] | We examine the thermodynamic behaviour of four-dimensional charged and uncharged de Sitter black holes enclosed in an isothermal cavity, in the extended phase space where the cosmological constant is treated as a thermodynamic pressure. We demonstrate the presence of a novel pressure-dependent phase transition in a com... |
1506.01676 | Ahmad Sheykhi | S. Ghaffari, M. H. Dehghani, A. Sheykhi | Holographic dark energy in the DGP braneworld with GO cutoff | 13 pages | Phys Rev D 89 (2014) 123009 | 10.1103/PhysRevD.89.123009 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the holographic dark energy (HDE) model in the framework of DGP
braneworld with Granda-Oliveros infrared (IR) cutoff, $L=(\alpha \dot{H}+\beta
H^2)^{-1/2}$. With this choice for IR cutoff, we are able to derive evolution
of the cosmological parameters such as the equation of state and the
deceleration par... | [
{
"created": "Wed, 15 Apr 2015 17:23:25 GMT",
"version": "v1"
}
] | 2015-06-05 | [
[
"Ghaffari",
"S.",
""
],
[
"Dehghani",
"M. H.",
""
],
[
"Sheykhi",
"A.",
""
]
] | We consider the holographic dark energy (HDE) model in the framework of DGP braneworld with Granda-Oliveros infrared (IR) cutoff, $L=(\alpha \dot{H}+\beta H^2)^{-1/2}$. With this choice for IR cutoff, we are able to derive evolution of the cosmological parameters such as the equation of state and the deceleration param... |
1106.1021 | Yi Pan | Yi Pan, Alessandra Buonanno, Michael Boyle, Luisa T. Buchman, Lawrence
E. Kidder, Harald P. Pfeiffer, Mark A. Scheel | Inspiral-merger-ringdown multipolar waveforms of nonspinning black-hole
binaries using the effective-one-body formalism | 26 pages, 25 figures, published Phys. Rev. D version | null | 10.1103/PhysRevD.84.124052 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We calibrate an effective-one-body (EOB) model to numerical-relativity
simulations of mass ratios 1, 2, 3, 4, and 6, by maximizing phase and amplitude
agreement of the leading (2,2) mode and of the subleading modes (2,1), (3,3),
(4,4) and (5,5). Aligning the calibrated EOB waveforms and the numerical
waveforms at low... | [
{
"created": "Mon, 6 Jun 2011 11:19:50 GMT",
"version": "v1"
},
{
"created": "Fri, 9 Mar 2012 23:33:06 GMT",
"version": "v2"
}
] | 2013-05-29 | [
[
"Pan",
"Yi",
""
],
[
"Buonanno",
"Alessandra",
""
],
[
"Boyle",
"Michael",
""
],
[
"Buchman",
"Luisa T.",
""
],
[
"Kidder",
"Lawrence E.",
""
],
[
"Pfeiffer",
"Harald P.",
""
],
[
"Scheel",
"Mark A.",
""
... | We calibrate an effective-one-body (EOB) model to numerical-relativity simulations of mass ratios 1, 2, 3, 4, and 6, by maximizing phase and amplitude agreement of the leading (2,2) mode and of the subleading modes (2,1), (3,3), (4,4) and (5,5). Aligning the calibrated EOB waveforms and the numerical waveforms at low f... |
1911.02143 | Yosuke Mishima | Yosuke Mishima, Tsutomu Kobayashi | Revisiting slow-roll dynamics and the tensor tilt in general
single-field inflation | 7 pages + appendix, 2 figures, v2: Matches published version in PRD,
references added | Phys. Rev. D 101, 043536 (2020) | 10.1103/PhysRevD.101.043536 | RUP-19-30 | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore the possibility of a blue-tilted gravitational wave spectrum from
potential-driven slow-roll inflation in the Horndeski theory. In Kamada et al.
(2012), it was claimed that a blue gravitational wave spectrum cannot be
obtained from stable potential-driven slow-roll inflation within the Horndeski
framework.... | [
{
"created": "Tue, 5 Nov 2019 23:43:41 GMT",
"version": "v1"
},
{
"created": "Fri, 28 Feb 2020 16:48:55 GMT",
"version": "v2"
}
] | 2020-03-02 | [
[
"Mishima",
"Yosuke",
""
],
[
"Kobayashi",
"Tsutomu",
""
]
] | We explore the possibility of a blue-tilted gravitational wave spectrum from potential-driven slow-roll inflation in the Horndeski theory. In Kamada et al. (2012), it was claimed that a blue gravitational wave spectrum cannot be obtained from stable potential-driven slow-roll inflation within the Horndeski framework. H... |
1607.04252 | Mich\`ele Levi | Mich\`ele Levi, Jan Steinhoff | Complete conservative dynamics for inspiralling compact binaries with
spins at the fourth post-Newtonian order | 23 pages, published | JCAP 2109 (2021) 029 | 10.1088/1475-7516/2021/09/029 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we complete the spin-dependent conservative dynamics of
inspiralling compact binaries at the fourth post-Newtonian order, and in
particular the derivation of the next-to-next-to-leading order spin-squared
interaction potential. We derive the physical equations of motion of the
position and the spin from ... | [
{
"created": "Thu, 14 Jul 2016 19:19:16 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Sep 2021 16:23:54 GMT",
"version": "v2"
}
] | 2021-09-23 | [
[
"Levi",
"Michèle",
""
],
[
"Steinhoff",
"Jan",
""
]
] | In this work we complete the spin-dependent conservative dynamics of inspiralling compact binaries at the fourth post-Newtonian order, and in particular the derivation of the next-to-next-to-leading order spin-squared interaction potential. We derive the physical equations of motion of the position and the spin from a ... |
1504.02433 | Yeinzon Rodriguez Garcia Dr. | Jose F. Rodriguez (1), Yeinzon Rodriguez (1,2) ((1) Universidad
Industrial de Santander, (2) Universidad Antonio Narino) | Analysis of Vector-Inflation Models Using Dynamical Systems | LaTeX file in elsarticle style, 4 pages, 1 figure. To be published in
Nuclear Physics B Proceedings Supplement as the proceedings of the Tenth
Latin American Symposium on High Energy Physics (Medellin - Colombia,
24th-28th November, 2014) | Nucl.Part.Phys.Proc. 267-269: 257-259, 2015 | 10.1016/j.nuclphysbps.2015.10.115 | PI/UAN-2015-582FT | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze two possible vector-field models using the techniques of dynamical
systems. The first model involves a U(1)-vector field and the second a triad of
SU(2)-vector fields. Both models include a gauge-fixing term and a power-law
potential. A dynamical system is formulated and it is found that one of the
critica... | [
{
"created": "Tue, 7 Apr 2015 20:57:11 GMT",
"version": "v1"
}
] | 2015-12-11 | [
[
"Rodriguez",
"Jose F.",
""
],
[
"Rodriguez",
"Yeinzon",
""
]
] | We analyze two possible vector-field models using the techniques of dynamical systems. The first model involves a U(1)-vector field and the second a triad of SU(2)-vector fields. Both models include a gauge-fixing term and a power-law potential. A dynamical system is formulated and it is found that one of the critical ... |
2309.08645 | Chiranjeeb Singha | Chiranjeeb Singha, Pritam Nanda, Pabitra Tripathy | Hawking temperature of black holes with multiple horizons | 16 pages, accepted for publication in General Relativity and
Gravitation | null | 10.1007/s10714-023-03154-z | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | There are several well-established methods for computing thermodynamics in
single-horizon spacetimes. However, understanding thermodynamics becomes
particularly important when dealing with spacetimes with multiple horizons.
Multiple horizons raise questions about the existence of a global temperature
for such spaceti... | [
{
"created": "Fri, 15 Sep 2023 09:29:15 GMT",
"version": "v1"
}
] | 2023-09-29 | [
[
"Singha",
"Chiranjeeb",
""
],
[
"Nanda",
"Pritam",
""
],
[
"Tripathy",
"Pabitra",
""
]
] | There are several well-established methods for computing thermodynamics in single-horizon spacetimes. However, understanding thermodynamics becomes particularly important when dealing with spacetimes with multiple horizons. Multiple horizons raise questions about the existence of a global temperature for such spacetime... |
0904.0568 | Francesco Cianfrani dr | Giovanni Montani, Nakia Carlevaro, Francesco Cianfrani and Valentino
Lacquaniti | Perspectives in Cosmology, Gravitation and Multidimensions | 9 pages, Proceedings of The 3rd Stueckelberg Workshop on Relativistic
Field Theories | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recent developments from the activity of the CGM Group are discussed.
Cosmological implications of fundamental approaches to quantization of gravity
are presented in order to fix the main issues as well as perspectives for
future investigations. Particular attention will be devoted to the classical
and quantum featur... | [
{
"created": "Fri, 3 Apr 2009 13:05:58 GMT",
"version": "v1"
}
] | 2009-04-06 | [
[
"Montani",
"Giovanni",
""
],
[
"Carlevaro",
"Nakia",
""
],
[
"Cianfrani",
"Francesco",
""
],
[
"Lacquaniti",
"Valentino",
""
]
] | Recent developments from the activity of the CGM Group are discussed. Cosmological implications of fundamental approaches to quantization of gravity are presented in order to fix the main issues as well as perspectives for future investigations. Particular attention will be devoted to the classical and quantum features... |
1807.04727 | Philippe Landry | Philippe Landry and Bharat Kumar | Constraints on the moment of inertia of PSR J0737-3039A from GW170817 | 8 pages, 4 figures; matches the published version | null | 10.3847/2041-8213/aaee76 | null | gr-qc astro-ph.HE nucl-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Continued observation of PSR J0737-3039, the double pulsar, is expected to
yield a precise determination of its primary component's moment of inertia in
the next few years. Since the moment of inertia depends sensitively on the
neutron star's internal structure, such a measurement will constrain the
equation of state... | [
{
"created": "Thu, 12 Jul 2018 17:05:44 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Oct 2018 15:36:23 GMT",
"version": "v2"
},
{
"created": "Tue, 12 Mar 2019 07:42:58 GMT",
"version": "v3"
}
] | 2019-03-13 | [
[
"Landry",
"Philippe",
""
],
[
"Kumar",
"Bharat",
""
]
] | Continued observation of PSR J0737-3039, the double pulsar, is expected to yield a precise determination of its primary component's moment of inertia in the next few years. Since the moment of inertia depends sensitively on the neutron star's internal structure, such a measurement will constrain the equation of state o... |
1404.7039 | Thomas Linz | Thomas M. Linz, John L. Friedman, Alan G. Wiseman | Self force on an accelerated particle | 54 pages, 1 figure | Phys. Rev. D 90, 024064, 2014 | 10.1103/PhysRevD.90.024064 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We calculate the singular field of an accelerated point particle (scalar
charge, electric charge or small gravitating mass) moving on an accelerated
(non-geodesic) trajectory in a generic background spacetime. Using a mode-sum
regularization scheme, we obtain explicit expressions for the self-force
regularization par... | [
{
"created": "Mon, 28 Apr 2014 16:17:52 GMT",
"version": "v1"
}
] | 2015-06-19 | [
[
"Linz",
"Thomas M.",
""
],
[
"Friedman",
"John L.",
""
],
[
"Wiseman",
"Alan G.",
""
]
] | We calculate the singular field of an accelerated point particle (scalar charge, electric charge or small gravitating mass) moving on an accelerated (non-geodesic) trajectory in a generic background spacetime. Using a mode-sum regularization scheme, we obtain explicit expressions for the self-force regularization param... |
gr-qc/9906037 | Jan Sladkowski | Jan Sladkowski (Univ. of Silesia) | Strongly gravitating empty spaces | null | null | null | null | gr-qc astro-ph hep-th | null | We use various results concerning isometry groups of Riemannian and
pseudo-Riemannian manifolds to prove that there are spaces on which
differential structure can act as a source of gravitational force (Brans
conjecture). The result is important for the analysis of the possible physical
meaning of differential calcul... | [
{
"created": "Fri, 11 Jun 1999 09:12:45 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Sladkowski",
"Jan",
"",
"Univ. of Silesia"
]
] | We use various results concerning isometry groups of Riemannian and pseudo-Riemannian manifolds to prove that there are spaces on which differential structure can act as a source of gravitational force (Brans conjecture). The result is important for the analysis of the possible physical meaning of differential calculus... |
1902.11242 | Piero Nicolini | Piero Nicolini, Euro Spallucci, Michael F. Wondrak | Quantum Corrected Black Holes from String T-Duality | 7 pages, 6 figures; v2 6 pages, 3 figures, in press on Phys. Lett. B | Physics Letters B 797 (2019) 134888 | 10.1016/j.physletb.2019.134888 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we present some stringy corrections to black hole spacetimes
emerging from string T-duality. As a first step, we derive the static Newtonian
potential by exploiting the relation between the T-duality and the path
integral duality. We show that the intrinsic non-perturbative nature of stringy
corrections... | [
{
"created": "Thu, 28 Feb 2019 17:44:00 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Aug 2019 19:27:20 GMT",
"version": "v2"
}
] | 2019-09-10 | [
[
"Nicolini",
"Piero",
""
],
[
"Spallucci",
"Euro",
""
],
[
"Wondrak",
"Michael F.",
""
]
] | In this paper we present some stringy corrections to black hole spacetimes emerging from string T-duality. As a first step, we derive the static Newtonian potential by exploiting the relation between the T-duality and the path integral duality. We show that the intrinsic non-perturbative nature of stringy corrections i... |
2103.12752 | Alex Davey | Alex Davey, Oscar J. C. Dias, Paul Rodgers | Phase diagram of the charged black hole bomb system | 36 pages, 12 figures | null | 10.1007/JHEP05(2021)189 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We find the phase diagram of solutions of the charged black hole bomb system.
In particular, we find the static hairy black holes of Einstein-Maxwell-Scalar
theory confined in a Minkowski box. We impose boundary conditions such that the
scalar field vanishes at and outside a cavity of constant radius. These hairy
bla... | [
{
"created": "Tue, 23 Mar 2021 18:00:02 GMT",
"version": "v1"
}
] | 2023-01-11 | [
[
"Davey",
"Alex",
""
],
[
"Dias",
"Oscar J. C.",
""
],
[
"Rodgers",
"Paul",
""
]
] | We find the phase diagram of solutions of the charged black hole bomb system. In particular, we find the static hairy black holes of Einstein-Maxwell-Scalar theory confined in a Minkowski box. We impose boundary conditions such that the scalar field vanishes at and outside a cavity of constant radius. These hairy black... |
1510.01211 | Marcony Silva Cunha | C. R. Muniz, G. Alencar, M. S. Cunha, R. R. Landim and R.N. Costa
Filho | Dependence of the Black-body Force on Spacetime Geometry and Topology | 8 pages, 5 figures. Revised version | Euro.Phys.Lett. 117,6, (2017) | 10.1209/0295-5075/117/60001 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we compute the corrections to the black-body force (BBF)
potential due to spacetime geometry and topology. This recently discovered
attractive force on neutral atoms is caused by the thermal radiation emitted
from black bodies and here we investigate it in relativistic gravitational
systems with spheric... | [
{
"created": "Mon, 5 Oct 2015 16:23:18 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Jun 2016 18:01:30 GMT",
"version": "v2"
},
{
"created": "Mon, 24 Apr 2017 13:38:01 GMT",
"version": "v3"
},
{
"created": "Fri, 15 Dec 2017 06:37:47 GMT",
"version": "v4"
}
] | 2017-12-18 | [
[
"Muniz",
"C. R.",
""
],
[
"Alencar",
"G.",
""
],
[
"Cunha",
"M. S.",
""
],
[
"Landim",
"R. R.",
""
],
[
"Filho",
"R. N. Costa",
""
]
] | In this paper we compute the corrections to the black-body force (BBF) potential due to spacetime geometry and topology. This recently discovered attractive force on neutral atoms is caused by the thermal radiation emitted from black bodies and here we investigate it in relativistic gravitational systems with spherical... |
2012.08551 | Vojtech Pravda | Vojtech Pravda, Alena Pravdova, Jiri Podolsky, Robert Svarc | Black holes and other spherical solutions in quadratic gravity with a
cosmological constant | 68 pages, matches the published version + contains the table of
contents | Phys. Rev. D 103, 064049 (2021) | 10.1103/PhysRevD.103.064049 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study static spherically symmetric solutions to the vacuum field equations
of quadratic gravity in the presence of a cosmological constant $\Lambda$.
Motivated by the trace no-hair theorem, we assume the Ricci scalar to be
constant throughout a spacetime. Furthermore, we employ the conformal-to-Kundt
metric ansatz... | [
{
"created": "Tue, 15 Dec 2020 19:03:18 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Mar 2021 18:37:12 GMT",
"version": "v2"
}
] | 2021-03-26 | [
[
"Pravda",
"Vojtech",
""
],
[
"Pravdova",
"Alena",
""
],
[
"Podolsky",
"Jiri",
""
],
[
"Svarc",
"Robert",
""
]
] | We study static spherically symmetric solutions to the vacuum field equations of quadratic gravity in the presence of a cosmological constant $\Lambda$. Motivated by the trace no-hair theorem, we assume the Ricci scalar to be constant throughout a spacetime. Furthermore, we employ the conformal-to-Kundt metric ansatz t... |
gr-qc/0605106 | Akihiro Ishibashi | Stefan Hollands, Akihiro Ishibashi, and Robert M. Wald | A Higher Dimensional Stationary Rotating Black Hole Must be Axisymmetric | 24 pages, no figures, v2: footnotes and references added, v3:
numerous minor revisions | Commun.Math.Phys.271:699-722,2007 | 10.1007/s00220-007-0216-4 | null | gr-qc hep-th | null | A key result in the proof of black hole uniqueness in 4-dimensions is that a
stationary black hole that is ``rotating''--i.e., is such that the stationary
Killing field is not everywhere normal to the horizon--must be axisymmetric.
The proof of this result in 4-dimensions relies on the fact that the orbits of
the sta... | [
{
"created": "Fri, 19 May 2006 19:43:21 GMT",
"version": "v1"
},
{
"created": "Tue, 30 May 2006 20:29:49 GMT",
"version": "v2"
},
{
"created": "Tue, 15 Aug 2006 21:19:48 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Hollands",
"Stefan",
""
],
[
"Ishibashi",
"Akihiro",
""
],
[
"Wald",
"Robert M.",
""
]
] | A key result in the proof of black hole uniqueness in 4-dimensions is that a stationary black hole that is ``rotating''--i.e., is such that the stationary Killing field is not everywhere normal to the horizon--must be axisymmetric. The proof of this result in 4-dimensions relies on the fact that the orbits of the stati... |
1909.00269 | Joseph Romano | Joseph D. Romano | Searches for stochastic gravitational-wave backgrounds | Lectures for the 2018 Les Houches Summer School on Gravitational
Waves (55 pages; 31 figures). Fixed some minor typos in a few equations | null | null | null | gr-qc astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | These lecture notes provide a brief introduction to methods used to search
for a stochastic background of gravitational radiation -- a superposition of
gravitational-wave signals that are either too weak or too numerous to
individually detect. The focus of these notes is on relevant data analysis
techniques, not on t... | [
{
"created": "Sat, 31 Aug 2019 19:36:17 GMT",
"version": "v1"
},
{
"created": "Thu, 6 Jul 2023 17:26:55 GMT",
"version": "v2"
}
] | 2023-07-07 | [
[
"Romano",
"Joseph D.",
""
]
] | These lecture notes provide a brief introduction to methods used to search for a stochastic background of gravitational radiation -- a superposition of gravitational-wave signals that are either too weak or too numerous to individually detect. The focus of these notes is on relevant data analysis techniques, not on the... |
0811.1011 | Emanuele Berti | K. G. Arun, Stas Babak, Emanuele Berti, Neil Cornish, Curt Cutler,
Jonathan Gair, Scott A. Hughes, Bala R. Iyer, Ryan N. Lang, Ilya Mandel,
Edward K. Porter, Bangalore S. Sathyaprakash, Siddhartha Sinha, Alicia M.
Sintes, Miquel Trias, Chris Van Den Broeck, Marta Volonteri | Massive Black Hole Binary Inspirals: Results from the LISA Parameter
Estimation Taskforce | 14 pages, 2 figures, 5 tables, minor changes to match version to be
published in the proceedings of the 7th LISA Symposium. For more information
see the Taskforce's wiki at http://www.tapir.caltech.edu/dokuwiki/lisape:home | Class.Quant.Grav.26:094027,2009 | 10.1088/0264-9381/26/9/094027 | null | gr-qc astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The LISA Parameter Estimation (LISAPE) Taskforce was formed in September 2007
to provide the LISA Project with vetted codes, source distribution models, and
results related to parameter estimation. The Taskforce's goal is to be able to
quickly calculate the impact of any mission design changes on LISA's science
capab... | [
{
"created": "Thu, 6 Nov 2008 18:43:45 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Mar 2009 04:42:59 GMT",
"version": "v2"
}
] | 2014-11-18 | [
[
"Arun",
"K. G.",
""
],
[
"Babak",
"Stas",
""
],
[
"Berti",
"Emanuele",
""
],
[
"Cornish",
"Neil",
""
],
[
"Cutler",
"Curt",
""
],
[
"Gair",
"Jonathan",
""
],
[
"Hughes",
"Scott A.",
""
],
[
"Iyer",
... | The LISA Parameter Estimation (LISAPE) Taskforce was formed in September 2007 to provide the LISA Project with vetted codes, source distribution models, and results related to parameter estimation. The Taskforce's goal is to be able to quickly calculate the impact of any mission design changes on LISA's science capabil... |
gr-qc/0403058 | Robert Beig | Robert Beig and Werner Krammer | Bowen-York Tensors | 12 pages, Contribution to CQG Special Issue "A Spacetime Safari:
Essays in Honour of Vincent Moncrief" | Class.Quant.Grav. 21 (2004) S73-S79 | 10.1088/0264-9381/21/3/005 | null | gr-qc | null | There is derived, for a conformally flat three-space, a family of linear
second-order partial differential operators which send vectors into tracefree,
symmetric two-tensors. These maps, which are parametrized by conformal Killing
vectors on the three-space, are such that the divergence of the resulting
tensor field ... | [
{
"created": "Sun, 14 Mar 2004 10:33:45 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Beig",
"Robert",
""
],
[
"Krammer",
"Werner",
""
]
] | There is derived, for a conformally flat three-space, a family of linear second-order partial differential operators which send vectors into tracefree, symmetric two-tensors. These maps, which are parametrized by conformal Killing vectors on the three-space, are such that the divergence of the resulting tensor field de... |
gr-qc/0102021 | Kyriakopoulos E. | E. Kyriakopoulos | B\"{a}cklund Transformations of Einstein's Field Equations for the
Interior of a Uniformly Rotating Stationary Axisymmetric Perfect Fluid | null | null | null | null | gr-qc | null | Clairin's method of obtaining B\"{a}cklund transformations is applied to
Einstein's field equations for the interior of a uniformly rotating stationary
axisymmetric perfect fluid. It is shown that for arbitrary pressure $p$ and
mass density $\mu$ the method does not give non-trivial B\"{a}cklund
transformations, whil... | [
{
"created": "Tue, 6 Feb 2001 09:55:12 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Kyriakopoulos",
"E.",
""
]
] | Clairin's method of obtaining B\"{a}cklund transformations is applied to Einstein's field equations for the interior of a uniformly rotating stationary axisymmetric perfect fluid. It is shown that for arbitrary pressure $p$ and mass density $\mu$ the method does not give non-trivial B\"{a}cklund transformations, while ... |
gr-qc/9905024 | Riuji Mochizuki | Riuji Mochizuki and Takayuki Suga | Energy Conservation and the Unruh Effect | null | null | null | null | gr-qc | null | In this paper it is explicitly demonstrated that the energy conservation law
is kept when a detector uniformly accelerated in the Minkowski vacuum is
excited and emits a particle. This fact had been hidden in conventional
approaches in which detectors were considered to be forced on trajectories. To
lift the veil we ... | [
{
"created": "Fri, 7 May 1999 04:48:56 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Aug 1999 01:39:39 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Mochizuki",
"Riuji",
""
],
[
"Suga",
"Takayuki",
""
]
] | In this paper it is explicitly demonstrated that the energy conservation law is kept when a detector uniformly accelerated in the Minkowski vacuum is excited and emits a particle. This fact had been hidden in conventional approaches in which detectors were considered to be forced on trajectories. To lift the veil we su... |
1505.06390 | James Isenberg | James Isenberg | On Strong Cosmic Censorship | Accepted for publication in Surveys in Differential Geometry, Volume
20 | null | null | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For almost half of the one hundred year history of Einstein's theory of
general relativity, Strong Cosmic Censorship has been one of its most
intriguing conjectures. The SCC conjecture addresses the issue of the nature of
the singularities found in most solutions of Einstein's gravitational field
equations: Are such ... | [
{
"created": "Sun, 24 May 2015 00:44:55 GMT",
"version": "v1"
}
] | 2015-05-26 | [
[
"Isenberg",
"James",
""
]
] | For almost half of the one hundred year history of Einstein's theory of general relativity, Strong Cosmic Censorship has been one of its most intriguing conjectures. The SCC conjecture addresses the issue of the nature of the singularities found in most solutions of Einstein's gravitational field equations: Are such si... |
2311.03890 | Akira Taniguchi | Sugumi Kanno, Jiro Soda, and Akira Taniguchi | Search for high-frequency gravitational waves with Rydberg atoms | 24 pages, 6 figures | null | null | KOBE-COSMO-23-10 | gr-qc hep-ph hep-th physics.atom-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose high-frequency gravitational wave (GW) detectors with Rydberg
atoms. Rydberg atoms are sensitive detectors of electric fields. By setting up
a constant magnetic field, a weak electric field is generated upon the arrival
of GWs. The weak electric field signal is then detected by an
electromagnetically induc... | [
{
"created": "Tue, 7 Nov 2023 11:10:02 GMT",
"version": "v1"
}
] | 2023-11-08 | [
[
"Kanno",
"Sugumi",
""
],
[
"Soda",
"Jiro",
""
],
[
"Taniguchi",
"Akira",
""
]
] | We propose high-frequency gravitational wave (GW) detectors with Rydberg atoms. Rydberg atoms are sensitive detectors of electric fields. By setting up a constant magnetic field, a weak electric field is generated upon the arrival of GWs. The weak electric field signal is then detected by an electromagnetically induced... |
1811.03006 | Phongpichit Channuie | Khamphee Karwan (Naresuan U.), Phongpichit Channuie (Walailak U.) | Generalized Conformal Transformation and Inflationary Attractors | v2: 6 figures, version published in Phys. Rev. D | Phys. Rev. D 100, 023514 (2019) | 10.1103/PhysRevD.100.023514 | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the inflationary attractors in models of inflation inspired
from general conformal transformation of general scalar-tensor theories to the
Einstein frame. The coefficient of the conformal transformation in our study
depends on both the scalar field and its kinetic term. Therefore the relevant
scalar-te... | [
{
"created": "Tue, 6 Nov 2018 12:57:55 GMT",
"version": "v1"
},
{
"created": "Tue, 30 Jul 2019 13:58:49 GMT",
"version": "v2"
}
] | 2019-07-31 | [
[
"Karwan",
"Khamphee",
"",
"Naresuan U."
],
[
"Channuie",
"Phongpichit",
"",
"Walailak U."
]
] | We investigate the inflationary attractors in models of inflation inspired from general conformal transformation of general scalar-tensor theories to the Einstein frame. The coefficient of the conformal transformation in our study depends on both the scalar field and its kinetic term. Therefore the relevant scalar-tens... |
0807.2574 | Gonzalo Garc\'ia-Reyes | Gonzalo Garc\'ia-Reyes and Guillermo A. Gonz\'alez | Rotating relativistic thin disks as sources of charged and magnetized
Kerr-NUT spacetimes | 21 pages, 4 figures, Latex | Int. J. Mod. Phys. D, Vol. 18, No. 9 (2009), pags. 1461-1481 | 10.1142/S0218271809015205 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A family of models of counterrotating and rotating relativistic thin discs of
infinite extension based on a charged and magnetized Kerr-NUT metric are
constructed using the well-known "displace, cut and reflect" method extended to
solutions of vacuum Einstein-Maxwell equations. The metric considered has as
limiting c... | [
{
"created": "Wed, 16 Jul 2008 15:14:21 GMT",
"version": "v1"
},
{
"created": "Thu, 17 Jul 2008 15:18:57 GMT",
"version": "v2"
},
{
"created": "Mon, 2 Mar 2009 15:46:18 GMT",
"version": "v3"
},
{
"created": "Tue, 3 Mar 2009 14:01:01 GMT",
"version": "v4"
},
{
"cre... | 2015-05-13 | [
[
"García-Reyes",
"Gonzalo",
""
],
[
"González",
"Guillermo A.",
""
]
] | A family of models of counterrotating and rotating relativistic thin discs of infinite extension based on a charged and magnetized Kerr-NUT metric are constructed using the well-known "displace, cut and reflect" method extended to solutions of vacuum Einstein-Maxwell equations. The metric considered has as limiting cas... |
2301.10278 | Tiberiu Harko | Amine Bouali, Himanshu Chaudhary, Rattanasak Hama, Tiberiu Harko,
Sorin V. Sabau, Marco San Mart\'in | Cosmological tests of the osculating Barthel-Kropina dark energy model | 23 pages, 16 figures, accepted for publication in EPJC | null | 10.1140/epjc/s10052-023-11265-9 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We further investigate the dark energy model based on the Finsler geometry
inspired osculating Barthel-Kropina cosmology. The Barthel-Kropina cosmological
approach is based on the introduction of a Barthel connection in an osculating
Finsler geometry, with the connection having the property that it is the
Levi-Civita... | [
{
"created": "Tue, 24 Jan 2023 19:25:07 GMT",
"version": "v1"
}
] | 2023-02-22 | [
[
"Bouali",
"Amine",
""
],
[
"Chaudhary",
"Himanshu",
""
],
[
"Hama",
"Rattanasak",
""
],
[
"Harko",
"Tiberiu",
""
],
[
"Sabau",
"Sorin V.",
""
],
[
"Martín",
"Marco San",
""
]
] | We further investigate the dark energy model based on the Finsler geometry inspired osculating Barthel-Kropina cosmology. The Barthel-Kropina cosmological approach is based on the introduction of a Barthel connection in an osculating Finsler geometry, with the connection having the property that it is the Levi-Civita c... |
2303.16789 | Dipanjan Dey | Dipanjan Dey, N. T. Layden, A. A. Coley, Pankaj S. Joshi | The equilibrium condition in gravitational collapse and its application
to a cosmological scenario | 20 pages, 7 figures | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We discuss the equilibrium conditions of the gravitational collapse of a
spherically symmetric matter cloud. We analyze the spinor structure of a
general collapsing space-time and redefine the equilibrium conditions by using
Cartan scalars. We qualitatively investigate the equilibrium configuration of a
two-fluid sys... | [
{
"created": "Wed, 29 Mar 2023 15:26:09 GMT",
"version": "v1"
}
] | 2023-03-30 | [
[
"Dey",
"Dipanjan",
""
],
[
"Layden",
"N. T.",
""
],
[
"Coley",
"A. A.",
""
],
[
"Joshi",
"Pankaj S.",
""
]
] | We discuss the equilibrium conditions of the gravitational collapse of a spherically symmetric matter cloud. We analyze the spinor structure of a general collapsing space-time and redefine the equilibrium conditions by using Cartan scalars. We qualitatively investigate the equilibrium configuration of a two-fluid syste... |
2302.12485 | Christoph Schiller | Christoph Schiller | From the Bronshtein cube of limits to the degrees of freedom of
relativistic quantum gravity | Essay written for the Gravity Research Foundation 2023 Awards for
Essays on Gravitation; one figure | null | null | null | gr-qc | http://creativecommons.org/licenses/by-sa/4.0/ | It is argued that the quadruple gravitational constant 4G can be seen as a
fundamental limit of nature. The limit holds across all gravitational systems
and distinguishes bound from unbound systems. Including the maximum force
c^4/4G allows extending the Bronshtein cube of physical theories to a cube of
limits. Every... | [
{
"created": "Fri, 24 Feb 2023 06:58:27 GMT",
"version": "v1"
}
] | 2023-02-27 | [
[
"Schiller",
"Christoph",
""
]
] | It is argued that the quadruple gravitational constant 4G can be seen as a fundamental limit of nature. The limit holds across all gravitational systems and distinguishes bound from unbound systems. Including the maximum force c^4/4G allows extending the Bronshtein cube of physical theories to a cube of limits. Every t... |
gr-qc/0002092 | Martin O'Loughlin | Martin O'Loughlin | Boundary actions in Ponzano-Regge discretization, Quantum groups and
AdS(3) | 27 pages, 7 figures. Equations corrected and reference added. To
appear in ATMP | Adv.Theor.Math.Phys. 6 (2003) 795-826 | null | SPIN-2000/04 | gr-qc hep-th | null | Boundary actions for three-dimensional quantum gravity in the discretized
formalism of Ponzano-Regge are studied with a view towards understanding the
boundary degrees of freedom. These degrees of freedom postulated in the
holography hypothesis are supposed to be characteristic of quantum gravity
theories. In particu... | [
{
"created": "Mon, 28 Feb 2000 14:59:26 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Nov 2002 16:39:57 GMT",
"version": "v2"
},
{
"created": "Sat, 27 Dec 2003 01:14:50 GMT",
"version": "v3"
}
] | 2007-05-23 | [
[
"O'Loughlin",
"Martin",
""
]
] | Boundary actions for three-dimensional quantum gravity in the discretized formalism of Ponzano-Regge are studied with a view towards understanding the boundary degrees of freedom. These degrees of freedom postulated in the holography hypothesis are supposed to be characteristic of quantum gravity theories. In particula... |
0909.0563 | Michele Vallisneri | Gian Mario Manca and Michele Vallisneri | Cover art: issues in the metric-guided and metric-less placement of
random and stochastic template banks | RevTeX4, 21 pages, 9 PDF figures | Phys.Rev.D81:024004,2010 | 10.1103/PhysRevD.81.024004 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The efficient placement of signal templates in source-parameter space is a
crucial requisite for exhaustive matched-filtering searches of modeled
gravitational-wave sources. Unfortunately, the current placement algorithms
based on regular parameter-space meshes are difficult to generalize beyond
simple signal models ... | [
{
"created": "Thu, 3 Sep 2009 02:20:45 GMT",
"version": "v1"
},
{
"created": "Thu, 14 Jan 2010 03:52:13 GMT",
"version": "v2"
}
] | 2010-01-15 | [
[
"Manca",
"Gian Mario",
""
],
[
"Vallisneri",
"Michele",
""
]
] | The efficient placement of signal templates in source-parameter space is a crucial requisite for exhaustive matched-filtering searches of modeled gravitational-wave sources. Unfortunately, the current placement algorithms based on regular parameter-space meshes are difficult to generalize beyond simple signal models wi... |
2103.02104 | \.I \c{C}a\u{g}r{\i} \.I\c{s}eri | Levent Akant, \.I. \c{C}a\u{g}r{\i} \.I\c{s}eri and \.Ibrahim Semiz | Estimation of attenuation of gravitational waves by Bose-Einstein
condensate dark matter halos using Bogoliubov-de Gennes theory | Additional references, corrected typos | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a gravitational plane wave passing through a galactic dark matter
halo composed of weakly self-interacting, self-gravitating, Bose-Einstein
condensate of ultralight particles. Treating the gravitational wave as a time
dependent perturbation, we study energy transfer between the gravitational wave
and the ... | [
{
"created": "Wed, 3 Mar 2021 00:57:59 GMT",
"version": "v1"
},
{
"created": "Sat, 15 May 2021 19:12:50 GMT",
"version": "v2"
}
] | 2021-05-18 | [
[
"Akant",
"Levent",
""
],
[
"İşeri",
"İ. Çağrı",
""
],
[
"Semiz",
"İbrahim",
""
]
] | We consider a gravitational plane wave passing through a galactic dark matter halo composed of weakly self-interacting, self-gravitating, Bose-Einstein condensate of ultralight particles. Treating the gravitational wave as a time dependent perturbation, we study energy transfer between the gravitational wave and the Bo... |
gr-qc/0607112 | Roald Sosnovskiy | Roald Sosnovskiy | The gravitational field energy density for symmetrical and asymmetrical
systems | 5 pages; corrected | null | null | null | gr-qc | null | The relativistic theory of gravitation has the considerable difficulties by
description of the gravitational field energy. Pseudotensor t00 in the some
cases cannot be interpreted as energy density of the gravitational field. In
[1] the approach was proposed, which allow to express the energy density of
such a field ... | [
{
"created": "Tue, 25 Jul 2006 16:58:41 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Jan 2007 17:16:32 GMT",
"version": "v2"
},
{
"created": "Fri, 16 Mar 2007 14:26:29 GMT",
"version": "v3"
},
{
"created": "Fri, 22 Jun 2007 11:10:21 GMT",
"version": "v4"
}
] | 2007-06-22 | [
[
"Sosnovskiy",
"Roald",
""
]
] | The relativistic theory of gravitation has the considerable difficulties by description of the gravitational field energy. Pseudotensor t00 in the some cases cannot be interpreted as energy density of the gravitational field. In [1] the approach was proposed, which allow to express the energy density of such a field th... |
1407.7814 | Gabriel Catren | Gabriel Catren | Geometrical Foundations of Cartan Gauge Gravity | 24 pages | null | 10.1142/S0219887815300020 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use the theory of Cartan connections to analyze the geometrical structures
underpinning the gauge-theoretical descriptions of the gravitational
interaction. According to the theory of Cartan connections, the spin connection
$\omega$ and the soldering form $\theta$ that define the fundamental variables
of the Palat... | [
{
"created": "Mon, 28 Jul 2014 18:17:37 GMT",
"version": "v1"
}
] | 2015-06-22 | [
[
"Catren",
"Gabriel",
""
]
] | We use the theory of Cartan connections to analyze the geometrical structures underpinning the gauge-theoretical descriptions of the gravitational interaction. According to the theory of Cartan connections, the spin connection $\omega$ and the soldering form $\theta$ that define the fundamental variables of the Palatin... |
gr-qc/0010021 | J. Ibanez | A. Di Prisco, L. Herrera and J. Ibanez | Qualitative analysis of dissipative cosmologies | 10 pages, 5 figures, RevTex. To appear in PRD | Phys.Rev.D63:023501,2001 | 10.1103/PhysRevD.63.023501 | null | gr-qc astro-ph | null | The evolution of an homogeneous and isotropic dissipative fluid is analyzed
using dynamical systems techniques. The dissipation is driven by bulk viscous
pressure and the truncated Israel-Stewart theory is used. Although almost all
solutions inflate, we show that only few of them can be considered as physical
solutio... | [
{
"created": "Fri, 6 Oct 2000 07:56:42 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Di Prisco",
"A.",
""
],
[
"Herrera",
"L.",
""
],
[
"Ibanez",
"J.",
""
]
] | The evolution of an homogeneous and isotropic dissipative fluid is analyzed using dynamical systems techniques. The dissipation is driven by bulk viscous pressure and the truncated Israel-Stewart theory is used. Although almost all solutions inflate, we show that only few of them can be considered as physical solutions... |
2205.12994 | Dirk Heumann | Dirk Heumann and Dimitrios Psaltis | Identifying the Event Horizons of Parametrically Deformed Black-Hole
Metrics | null | null | 10.1103/PhysRevD.107.044015 | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by-nc-sa/4.0/ | Recent advancements in observational techniques have led to new tests of the
general relativistic predictions for black-hole spacetimes in the strong-field
regime. One of the key ingredients for several tests is a metric that allows
for deviations from the Kerr solution but remains free of pathologies outside
its eve... | [
{
"created": "Wed, 25 May 2022 18:04:56 GMT",
"version": "v1"
}
] | 2023-02-22 | [
[
"Heumann",
"Dirk",
""
],
[
"Psaltis",
"Dimitrios",
""
]
] | Recent advancements in observational techniques have led to new tests of the general relativistic predictions for black-hole spacetimes in the strong-field regime. One of the key ingredients for several tests is a metric that allows for deviations from the Kerr solution but remains free of pathologies outside its event... |
gr-qc/0202100 | Farid Ya. Khalili | S.L.Danilishin, F.Ya.Khalili | Stroboscopic Variation Measurement | 13 pages, 2 figures drawn in TeX and 2 figures in postscript,
misprint corrected | Phys.Lett. A300 (2002) 547-558 | 10.1016/S0375-9601(02)00903-9 | null | gr-qc | null | A new procedure of the linear position measurement which allows to obtain
sensitivity better than the Standard Quantum Limit and close to the Energetic
Quantum Limit is proposed and analyzed in details. Proposed method is based on
the principles of stroboscopic quantum measurement and variation quantum
measurement an... | [
{
"created": "Thu, 28 Feb 2002 14:17:06 GMT",
"version": "v1"
},
{
"created": "Wed, 20 Mar 2002 10:34:59 GMT",
"version": "v2"
},
{
"created": "Thu, 21 Mar 2002 12:09:46 GMT",
"version": "v3"
},
{
"created": "Thu, 20 Jun 2002 08:32:15 GMT",
"version": "v4"
}
] | 2015-06-25 | [
[
"Danilishin",
"S. L.",
""
],
[
"Khalili",
"F. Ya.",
""
]
] | A new procedure of the linear position measurement which allows to obtain sensitivity better than the Standard Quantum Limit and close to the Energetic Quantum Limit is proposed and analyzed in details. Proposed method is based on the principles of stroboscopic quantum measurement and variation quantum measurement and ... |
1304.7924 | Seyen Kouwn | Seoktae Koh, Seyen Kouwn, O-Kab Kwon, and Phillial Oh | Cosmological Perturbations of a Quartet of Scalar Fields with a
Spatially Constant Gradient | 26 pages, 1 figure, minor corrections, references are added,
published version | null | 10.1103/PhysRevD.88.043523 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the linear perturbations for the single scalar field inflation
model interacting with an additional triad of scalar fields. The background
solutions of the three additional scalar fields depend on spatial coordinates
with a constant gradient $\alpha$ and the ensuing evolution preserves the
homogeneity of ... | [
{
"created": "Tue, 30 Apr 2013 09:10:22 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Aug 2013 16:15:37 GMT",
"version": "v2"
}
] | 2013-09-04 | [
[
"Koh",
"Seoktae",
""
],
[
"Kouwn",
"Seyen",
""
],
[
"Kwon",
"O-Kab",
""
],
[
"Oh",
"Phillial",
""
]
] | We consider the linear perturbations for the single scalar field inflation model interacting with an additional triad of scalar fields. The background solutions of the three additional scalar fields depend on spatial coordinates with a constant gradient $\alpha$ and the ensuing evolution preserves the homogeneity of th... |
gr-qc/0207094 | J. Frauendiener | J. Frauendiener and Matthias Hein | Numerical evolution of axisymmetric, isolated systems in General
Relativity | 10 pages, 8 figures, uses revtex4, replaced with revised version | Phys.Rev. D66 (2002) 124004 | 10.1103/PhysRevD.66.124004 | null | gr-qc | null | We describe in this article a new code for evolving axisymmetric isolated
systems in general relativity. Such systems are described by asymptotically
flat space-times which have the property that they admit a conformal extension.
We are working directly in the extended `conformal' manifold and solve
numerically Fried... | [
{
"created": "Wed, 24 Jul 2002 14:39:09 GMT",
"version": "v1"
},
{
"created": "Fri, 26 Jul 2002 10:01:37 GMT",
"version": "v2"
}
] | 2009-11-07 | [
[
"Frauendiener",
"J.",
""
],
[
"Hein",
"Matthias",
""
]
] | We describe in this article a new code for evolving axisymmetric isolated systems in general relativity. Such systems are described by asymptotically flat space-times which have the property that they admit a conformal extension. We are working directly in the extended `conformal' manifold and solve numerically Friedri... |
2311.12896 | Hassan Hassanabadi prof. | Salvatore Capozziello, Soroush Zare, and Hassan Hassanabadi | Testing bumblebee gravity with global monopoles in a dark matter spike
by EHT observations from M87 and Sgr A | null | null | null | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate supermassive black holes (SMBH), surrounded by a dark matter
(DM) spike, that can be found at the centers of Milky Way and M87 galaxies and
are accompanied by a specific kind of topological defect. The investigation is
developed within the framework of Bumblebee Gravity (BG) with a global monopole
(GM)... | [
{
"created": "Tue, 21 Nov 2023 08:28:17 GMT",
"version": "v1"
}
] | 2023-11-23 | [
[
"Capozziello",
"Salvatore",
""
],
[
"Zare",
"Soroush",
""
],
[
"Hassanabadi",
"Hassan",
""
]
] | We investigate supermassive black holes (SMBH), surrounded by a dark matter (DM) spike, that can be found at the centers of Milky Way and M87 galaxies and are accompanied by a specific kind of topological defect. The investigation is developed within the framework of Bumblebee Gravity (BG) with a global monopole (GM). ... |
1901.01416 | SangChul Yoon | SangChul Yoon | From Lagrangian to Hamiltonian formulations of the Palatini action | 12 pages, completion of previous works, arXiv:1706.07301 and
arXiv:1805.01996 | null | null | null | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We work on the Lagrangian and the Hamiltonian formulations of the Palatini
action. In the Lagrangian formulation, we find that we need to assume the
metric compatibility and the torsion zero or to assume the tetrad compatibility
to describe General Relativity. In the Hamiltonian formulation, we obtain the
Einstein's ... | [
{
"created": "Sat, 5 Jan 2019 13:52:12 GMT",
"version": "v1"
}
] | 2019-01-08 | [
[
"Yoon",
"SangChul",
""
]
] | We work on the Lagrangian and the Hamiltonian formulations of the Palatini action. In the Lagrangian formulation, we find that we need to assume the metric compatibility and the torsion zero or to assume the tetrad compatibility to describe General Relativity. In the Hamiltonian formulation, we obtain the Einstein's eq... |
1504.04592 | Volker Schlue | Spyros Alexakis and Volker Schlue | Non-existence of time-periodic vacuum spacetimes | 50 pages, 3 figures | J. Differential Geom. 108(1): 1-62 (2018) | 10.4310/jdg/1513998029 | null | gr-qc math.AP math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove that smooth asymptotically flat solutions to the Einstein vacuum
equations which are assumed to be periodic in time, are in fact stationary in a
neighborhood of infinity. Our result applies under physically relevant
regularity assumptions purely at the level of the initial data. In particular,
our work remov... | [
{
"created": "Fri, 17 Apr 2015 17:52:51 GMT",
"version": "v1"
}
] | 2021-08-16 | [
[
"Alexakis",
"Spyros",
""
],
[
"Schlue",
"Volker",
""
]
] | We prove that smooth asymptotically flat solutions to the Einstein vacuum equations which are assumed to be periodic in time, are in fact stationary in a neighborhood of infinity. Our result applies under physically relevant regularity assumptions purely at the level of the initial data. In particular, our work removes... |
2406.09431 | Farruh Atamurotov | Yovqochev Pahlavon, Farruh Atamurotov, Kimet Jusufi, Mubasher Jamil,
Ahmadjon Abdujabbarov | Effect of magnetized plasma on shadow and gravitational lensing of a
Reissner-Nordstr\"om black hole | 18 pages, 15 figures, To appear in Physics of the Dark Universe.
arXiv admin note: substantial text overlap with arXiv:2109.08150 | Physics of the Dark Universe 45 (2024) 101543 | 10.1016/j.dark.2024.101543 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore the influence of the axion-plasmon on the optical properties of
the charged black hole and show how the axion-plasmon coupling modifies the
motion of photons around the charged black hole. We then explore in details
observational effects such as the black hole shadow, the gravitational
deflection angle, Ei... | [
{
"created": "Sat, 1 Jun 2024 13:06:17 GMT",
"version": "v1"
}
] | 2024-06-21 | [
[
"Pahlavon",
"Yovqochev",
""
],
[
"Atamurotov",
"Farruh",
""
],
[
"Jusufi",
"Kimet",
""
],
[
"Jamil",
"Mubasher",
""
],
[
"Abdujabbarov",
"Ahmadjon",
""
]
] | We explore the influence of the axion-plasmon on the optical properties of the charged black hole and show how the axion-plasmon coupling modifies the motion of photons around the charged black hole. We then explore in details observational effects such as the black hole shadow, the gravitational deflection angle, Eins... |
gr-qc/0701129 | J. Ponce de Leon | J. Ponce de Leon | Exterior spacetime for stellar models in 5-dimensional Kaluza-Klein
gravity | Typos corrected. Accepted for publication in Classical and Quantum
Gravity | Class.Quant.Grav.24:1755-1774,2007 | 10.1088/0264-9381/24/7/006 | null | gr-qc | null | It is well-known that Birkhoff's theorem is no longer valid in theories with
more than four dimensions. Thus, in these theories the effective 4-dimensional
picture allows the existence of different possible, non-Schwarzschild,
scenarios for the description of the spacetime outside of a spherical star,
contrary to gen... | [
{
"created": "Wed, 24 Jan 2007 12:10:59 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Feb 2007 17:24:45 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"de Leon",
"J. Ponce",
""
]
] | It is well-known that Birkhoff's theorem is no longer valid in theories with more than four dimensions. Thus, in these theories the effective 4-dimensional picture allows the existence of different possible, non-Schwarzschild, scenarios for the description of the spacetime outside of a spherical star, contrary to gener... |
1111.1383 | Xin Li | Xin Li and Zhe Chang | Gravitational wave in Lorentz violating gravity | major corrections, 8 pages, 1 figure | null | null | null | gr-qc | http://creativecommons.org/licenses/by/3.0/ | By making use of the weak gravitational field approximation, we obtain a
linearized solution of the gravitational vacuum field equation in an
anisotropic spacetime. The plane-wave solution and dispersion relation of
gravitational wave is presented explicitly. There is possibility that the speed
of gravitational wave ... | [
{
"created": "Sun, 6 Nov 2011 08:02:54 GMT",
"version": "v1"
},
{
"created": "Sun, 1 Apr 2012 09:53:40 GMT",
"version": "v2"
}
] | 2012-04-03 | [
[
"Li",
"Xin",
""
],
[
"Chang",
"Zhe",
""
]
] | By making use of the weak gravitational field approximation, we obtain a linearized solution of the gravitational vacuum field equation in an anisotropic spacetime. The plane-wave solution and dispersion relation of gravitational wave is presented explicitly. There is possibility that the speed of gravitational wave is... |
gr-qc/0204024 | Efrain Rojas | Ruben Cordero and Efrain Rojas | Generalized Chiral Membrane Dynamics | 8 pages, to appear in Proceedings of the 4th Mexican School on
Gravitation and Mathematical Physics, Huatulco Oax, Mexico, December 2000 | Rev.Mex.Fis. 49S1 (2003) 44-48 | null | null | gr-qc | null | We develop the dynamics of the chiral superconducting membranes(with null
current) in an alternative geometrical approach. Besides of this, we show the
equivalence of the resulting description to the one known Dirac-Nambu-Goto
(DNG) case. Integrability for chiral string model is obtained using a proposed
light-cone g... | [
{
"created": "Fri, 5 Apr 2002 04:11:35 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Cordero",
"Ruben",
""
],
[
"Rojas",
"Efrain",
""
]
] | We develop the dynamics of the chiral superconducting membranes(with null current) in an alternative geometrical approach. Besides of this, we show the equivalence of the resulting description to the one known Dirac-Nambu-Goto (DNG) case. Integrability for chiral string model is obtained using a proposed light-cone gau... |
2111.12650 | Philippe G. LeFloch | Philippe G. LeFloch | Gravitational singularities, scattering maps for bouncing, and
structure-preserving algorithms | 15 pages | null | null | null | gr-qc math.AP | http://creativecommons.org/licenses/by/4.0/ | This note emphasizes the role of multi-scale wave structures and junction
conditions in many fields of physics, from the dynamics of fluids with
non-convex equations of state to the study of gravitational singularities and
bouncing cosmologies in general relativity. Concerning the definition and
construction of bounc... | [
{
"created": "Wed, 24 Nov 2021 17:30:57 GMT",
"version": "v1"
}
] | 2021-11-25 | [
[
"LeFloch",
"Philippe G.",
""
]
] | This note emphasizes the role of multi-scale wave structures and junction conditions in many fields of physics, from the dynamics of fluids with non-convex equations of state to the study of gravitational singularities and bouncing cosmologies in general relativity. Concerning the definition and construction of bouncin... |
gr-qc/0009065 | Vikram Soni | Vikram Soni (National Physical Laboratory, New Delhi, India) | Planck Scale Physics of the Single Particle Schr\"{o}dinger Equation
with Gravitational Self-Interaction | 16 pages, Revtex, No figure, Submitted to Physics Letters A | Pramana 59:375-384,2002 | 10.1007/s12043-002-0130-4 | null | gr-qc | null | We consider the modification of a single particle Schr\"{o}dinger equation by
the inclusion of an additional gravitational self-potential term which follows
from the prescription that the' mass-density'that enters this term is given by
$m |\psi (\vec {r},t)|^2$, where $\psi (\vec {r}, t)$ is the wavefunction and
$m$ ... | [
{
"created": "Tue, 19 Sep 2000 07:27:07 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Soni",
"Vikram",
"",
"National Physical Laboratory, New Delhi, India"
]
] | We consider the modification of a single particle Schr\"{o}dinger equation by the inclusion of an additional gravitational self-potential term which follows from the prescription that the' mass-density'that enters this term is given by $m |\psi (\vec {r},t)|^2$, where $\psi (\vec {r}, t)$ is the wavefunction and $m$ is... |
2301.12509 | Giuseppe Gaetano Luciano Dr | Giuseppe Gaetano Luciano | Constraining Barrow entropy-based Cosmology with power-law inflation | 10 pages, 2 labeled figures | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We study the inflationary era of the Universe in a modified cosmological
scenario based on the gravity-thermodynamics conjecture with Barrow entropy
instead of the usual Bekenstein-Hawking one. The former arises from the effort
to account for quantum gravitational effects on the horizon surface of black
holes and, in... | [
{
"created": "Sun, 29 Jan 2023 18:31:04 GMT",
"version": "v1"
}
] | 2023-01-31 | [
[
"Luciano",
"Giuseppe Gaetano",
""
]
] | We study the inflationary era of the Universe in a modified cosmological scenario based on the gravity-thermodynamics conjecture with Barrow entropy instead of the usual Bekenstein-Hawking one. The former arises from the effort to account for quantum gravitational effects on the horizon surface of black holes and, in a... |
2208.08676 | Philippe G. LeFloch | Philippe G. LeFloch and Yue Ma | Einstein-Klein-Gordon spacetimes in the harmonic near-Minkowski regime | 32 pages. arXiv admin note: text overlap with arXiv:1712.10045 | null | null | null | gr-qc math.AP | http://creativecommons.org/licenses/by/4.0/ | We study the initial value problem for the Einstein-Klein-Gordon system and
establish the global nonlinear stability of massive matter in the
near-Minkowski regime when the initial geometry is a perturbation of an
asymptotically flat, spacelike hypersurface in Minkowski spacetime and the
metric enjoys the harmonic de... | [
{
"created": "Thu, 18 Aug 2022 07:23:57 GMT",
"version": "v1"
}
] | 2022-11-15 | [
[
"LeFloch",
"Philippe G.",
""
],
[
"Ma",
"Yue",
""
]
] | We study the initial value problem for the Einstein-Klein-Gordon system and establish the global nonlinear stability of massive matter in the near-Minkowski regime when the initial geometry is a perturbation of an asymptotically flat, spacelike hypersurface in Minkowski spacetime and the metric enjoys the harmonic deca... |
1806.05047 | Marco Cariglia Dr | M. Cariglia, G. W. Gibbons | L\'evy-Leblond fermions on the wormhole | 15 pages, 3 figures. V2 references added | null | null | null | gr-qc cond-mat.mes-hall hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a simple model of entanglement generated by geometry, studying
non-relativistic massive L\'evy-Leblond fermions in the $1+2$ geometry of a
Bronnikov-Ellis wormhole. The model is equivalent to that of relativistic
massless Dirac fermions in $1+3$ dimensions, where one spatial direction is
flat. The effect o... | [
{
"created": "Tue, 12 Jun 2018 05:51:47 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Jun 2018 12:33:05 GMT",
"version": "v2"
}
] | 2018-06-28 | [
[
"Cariglia",
"M.",
""
],
[
"Gibbons",
"G. W.",
""
]
] | We propose a simple model of entanglement generated by geometry, studying non-relativistic massive L\'evy-Leblond fermions in the $1+2$ geometry of a Bronnikov-Ellis wormhole. The model is equivalent to that of relativistic massless Dirac fermions in $1+3$ dimensions, where one spatial direction is flat. The effect of ... |
2310.20625 | Gregorio Carullo | Gregorio Carullo, Roberto Cotesta, Emanuele Berti, Vitor Cardoso | Reply to Comment on "Analysis of Ringdown Overtones in GW150914" | 3 pages, 1 figure. Unabridged version of the shorter (due to format
constraints) Reply published in Phys. Rev. Lett | Phys. Rev. Lett. 131, 169002 (2023) | 10.1103/PhysRevLett.131.169002 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this Reply we include the corrections suggested in the Comment [Phys. Rev.
Lett. 131, 169001]. We show that their impact on our results is small, and that
the overall conclusion of the Article [Phys. Rev. Lett. 129, 111102] are
robust. As pointed out in the Article, it is crucial to account for the
statistical unc... | [
{
"created": "Tue, 31 Oct 2023 16:57:13 GMT",
"version": "v1"
}
] | 2023-11-01 | [
[
"Carullo",
"Gregorio",
""
],
[
"Cotesta",
"Roberto",
""
],
[
"Berti",
"Emanuele",
""
],
[
"Cardoso",
"Vitor",
""
]
] | In this Reply we include the corrections suggested in the Comment [Phys. Rev. Lett. 131, 169001]. We show that their impact on our results is small, and that the overall conclusion of the Article [Phys. Rev. Lett. 129, 111102] are robust. As pointed out in the Article, it is crucial to account for the statistical uncer... |
2204.02875 | Jos\'e Eliel Camargo Molina | Jos\'e Eliel Camargo-Molina and Arttu Rajantie | Phase transitions in de Sitter: The stochastic formalism | 7 pages, 6 figures | null | null | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The stochastic spectral expansion method offers a simple framework for
calculations in de Sitter spacetimes. We show how to extend its reach to
metastable vacuum states, both in the case when the potential is bounded from
below, and when it is unbounded from below and therefore no stable vacuum state
exists. In both ... | [
{
"created": "Wed, 6 Apr 2022 14:44:47 GMT",
"version": "v1"
}
] | 2022-04-07 | [
[
"Camargo-Molina",
"José Eliel",
""
],
[
"Rajantie",
"Arttu",
""
]
] | The stochastic spectral expansion method offers a simple framework for calculations in de Sitter spacetimes. We show how to extend its reach to metastable vacuum states, both in the case when the potential is bounded from below, and when it is unbounded from below and therefore no stable vacuum state exists. In both ca... |
1404.0299 | Fatimah Shojai | F. Shojai and A. Shojai | An f(R) model for dark matter: rotation curves and gravitational lensing | null | General Relativity and Gravitation, 46, 4, 1704, 2014 | 10.1007/s10714-014-1704-4 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | There should be two ways to describe the flat rotation curves of galaxies and
cluster of galaxies. Either one can introduce a dark matter component for the
matter filling the halo, or by modifying the gravity theory and give the flat
rotation curve a geometrical nature. Here we adopt an f(R) model suitable for
descri... | [
{
"created": "Tue, 1 Apr 2014 16:19:51 GMT",
"version": "v1"
}
] | 2014-04-02 | [
[
"Shojai",
"F.",
""
],
[
"Shojai",
"A.",
""
]
] | There should be two ways to describe the flat rotation curves of galaxies and cluster of galaxies. Either one can introduce a dark matter component for the matter filling the halo, or by modifying the gravity theory and give the flat rotation curve a geometrical nature. Here we adopt an f(R) model suitable for describi... |
gr-qc/0101013 | Monica Pierri | M. Pierri | Probing Quantum General Relativity Through Exactly Soluble
Midi-Superspaces II: Polarized Gowdy Models | 20 pages, latex | Int.J.Mod.Phys. D11 (2002) 135 | 10.1142/S0218271802001779 | null | gr-qc | null | Canonical quantization of the polarized Gowdy midi-superspace with a 3-torus
spatial topology is carried out. As in an earlier work on the Einstein-Rosen
cylindrical waves, symmetry reduction is used to cast the original problem in
4-dimensional space-times to a 3-dimensional setting. To our knowledge, this is
the fi... | [
{
"created": "Tue, 2 Jan 2001 16:50:08 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Pierri",
"M.",
""
]
] | Canonical quantization of the polarized Gowdy midi-superspace with a 3-torus spatial topology is carried out. As in an earlier work on the Einstein-Rosen cylindrical waves, symmetry reduction is used to cast the original problem in 4-dimensional space-times to a 3-dimensional setting. To our knowledge, this is the firs... |
gr-qc/9409023 | Hadi Salehi Kermani | Hadi Salehi | Evaporating Black Holes And An Entropic Scale-Hierarchy | 7 pages, Latex, (ISTPM) IPM-94-055 | null | null | null | gr-qc | null | It is argued that a characteristic length may be associated with the entropic
state of a spherically symmetric black hole in the cosmological context. This
length is much smaller than the Schwarzschild-radius of a black hole and may
act as a regulator of arbitrarily high frequencies apparently entering the
usual deri... | [
{
"created": "Mon, 12 Sep 1994 16:40:31 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Salehi",
"Hadi",
""
]
] | It is argued that a characteristic length may be associated with the entropic state of a spherically symmetric black hole in the cosmological context. This length is much smaller than the Schwarzschild-radius of a black hole and may act as a regulator of arbitrarily high frequencies apparently entering the usual deriva... |
gr-qc/9305017 | Kristin Schleich | John L. Friedman, Kristin Schleich, and Donald M. Witt | Topological Censorship | 12 pages, REVTEX; 1 postscript figure in a separate uuencoded file.
Our earlier version (PRL 71, 1486 (1993)) contained a secondary result,
mistakenly attributed to Schoen and Yau, regarding ``passive topological
censorship'' of a certain class of topologies. As Gregory Burnett has pointed
out (gr-qc/9504012), ... | Phys.Rev.Lett. 71 (1993) 1486-1489; Erratum-ibid. 75 (1995) 1872 | 10.1103/PhysRevLett.75.1872 | null | gr-qc | null | All three-manifolds are known to occur as Cauchy surfaces of asymptotically
flat vacuum spacetimes and of spacetimes with positive-energy sources. We prove
here the conjecture that general relativity does not allow an observer to probe
the topology of spacetime: any topological structure collapses too quickly to
allo... | [
{
"created": "Sun, 23 May 1993 21:09:00 GMT",
"version": "v1"
},
{
"created": "Fri, 9 Jun 1995 05:21:58 GMT",
"version": "v2"
}
] | 2009-10-22 | [
[
"Friedman",
"John L.",
""
],
[
"Schleich",
"Kristin",
""
],
[
"Witt",
"Donald M.",
""
]
] | All three-manifolds are known to occur as Cauchy surfaces of asymptotically flat vacuum spacetimes and of spacetimes with positive-energy sources. We prove here the conjecture that general relativity does not allow an observer to probe the topology of spacetime: any topological structure collapses too quickly to allow ... |
2009.04460 | Murli Manohar Verma Dr. | Ajay Sharma and Murli Manohar Verma | Constraining $f(R)$ model through spectral indices and reheating
temperature | 14 pages, 13 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate a form of $ f(R) = {R^{1+\delta}}/{R_c^{\delta}}$ and study
the viability of the model for inflation in the Jordan and the Einstein frames.
This model is further analysed by using the power spectrum indices of the
inflation and the reheating temperature. During the inflationary evolution, the
model pre... | [
{
"created": "Wed, 9 Sep 2020 10:20:22 GMT",
"version": "v1"
}
] | 2020-09-11 | [
[
"Sharma",
"Ajay",
""
],
[
"Verma",
"Murli Manohar",
""
]
] | We investigate a form of $ f(R) = {R^{1+\delta}}/{R_c^{\delta}}$ and study the viability of the model for inflation in the Jordan and the Einstein frames. This model is further analysed by using the power spectrum indices of the inflation and the reheating temperature. During the inflationary evolution, the model predi... |
gr-qc/0703076 | Roldao da Rocha | Roldao da Rocha and J. G. Pereira | The quadratic spinor Lagrangian, axial torsion current, and
generalizations | 9 pages, RevTeX, to be published in Int.J.Mod.Phys.D (2007) | Int.J.Mod.Phys.D16:1653-1667,2007 | 10.1142/S0218271807010900 | null | gr-qc | null | We show that the Einstein-Hilbert, the Einstein-Palatini, and the Holst
actions can be derived from the Quadratic Spinor Lagrangian (QSL), when the
three classes of Dirac spinor fields, under Lounesto spinor field
classification, are considered. To each one of these classes, there corresponds
a unique kind of action ... | [
{
"created": "Tue, 13 Mar 2007 20:53:58 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"da Rocha",
"Roldao",
""
],
[
"Pereira",
"J. G.",
""
]
] | We show that the Einstein-Hilbert, the Einstein-Palatini, and the Holst actions can be derived from the Quadratic Spinor Lagrangian (QSL), when the three classes of Dirac spinor fields, under Lounesto spinor field classification, are considered. To each one of these classes, there corresponds a unique kind of action fo... |
1609.02841 | Luis Herrera | L. Herrera, A. Di Prisco, J. Ospino, J. Carot | Earliest stages of the non-equilibrium in axially symmetric,
self-gravitating, dissipative fluids | 13 pages Latex. To appear in Phys. Rev. D. Typos corrected | Phys. Rev. D94, 064072, (2016) | 10.1103/PhysRevD.94.064072 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We report a study on axially and reflection symmetric dissipative fluids,
just after its departure from hydrostatic and thermal equilibrium, at the
smallest time scale at which the first signs of dynamic evolution appear. Such
a time scale is smaller than the thermal relaxation time, the thermal
adjustment time and t... | [
{
"created": "Fri, 9 Sep 2016 15:51:55 GMT",
"version": "v1"
},
{
"created": "Mon, 19 Sep 2016 15:10:41 GMT",
"version": "v2"
}
] | 2016-10-12 | [
[
"Herrera",
"L.",
""
],
[
"Di Prisco",
"A.",
""
],
[
"Ospino",
"J.",
""
],
[
"Carot",
"J.",
""
]
] | We report a study on axially and reflection symmetric dissipative fluids, just after its departure from hydrostatic and thermal equilibrium, at the smallest time scale at which the first signs of dynamic evolution appear. Such a time scale is smaller than the thermal relaxation time, the thermal adjustment time and the... |
2312.14603 | M Blagojevi\'c | Milutin Blagojevi\'c and James M. Nester | From the Lorentz invariant to the coframe form of $f(T)$ gravity | null | null | null | LaTeX, 21 pages | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown that the Lorentz invariant $f(T)$ gravity, defined by the
coframe-connection-multiplier form of the Lagrangian, can be gauge-fixed to the
pure coframe form. After clarifying basic aspects of the problem in the
Lagrangian formalism, a more detailed analysis of this gauge equivalence is
given relying on the... | [
{
"created": "Fri, 22 Dec 2023 10:58:26 GMT",
"version": "v1"
}
] | 2023-12-25 | [
[
"Blagojević",
"Milutin",
""
],
[
"Nester",
"James M.",
""
]
] | It is shown that the Lorentz invariant $f(T)$ gravity, defined by the coframe-connection-multiplier form of the Lagrangian, can be gauge-fixed to the pure coframe form. After clarifying basic aspects of the problem in the Lagrangian formalism, a more detailed analysis of this gauge equivalence is given relying on the D... |
1412.3827 | Alex Va\~n\'o-Vi\~nuales | Alex Va\~n\'o-Vi\~nuales, Sascha Husa and David Hilditch | Spherical symmetry as a test case for unconstrained hyperboloidal
evolution | 30 pages, 7 figures | Class. Quantum Grav. 32 (2015) 175010 | 10.1088/0264-9381/32/17/175010 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the hyperboloidal initial value problem in numerical relativity,
motivated by the goal to evolve radiating compact objects such as black hole
binaries with a numerical grid that includes null infinity. Unconstrained
evolution schemes promise optimal efficiency, but are difficult to regularize
at null infi... | [
{
"created": "Thu, 11 Dec 2014 21:20:39 GMT",
"version": "v1"
},
{
"created": "Fri, 4 Sep 2015 16:55:01 GMT",
"version": "v2"
}
] | 2015-09-07 | [
[
"Vañó-Viñuales",
"Alex",
""
],
[
"Husa",
"Sascha",
""
],
[
"Hilditch",
"David",
""
]
] | We consider the hyperboloidal initial value problem in numerical relativity, motivated by the goal to evolve radiating compact objects such as black hole binaries with a numerical grid that includes null infinity. Unconstrained evolution schemes promise optimal efficiency, but are difficult to regularize at null infini... |
gr-qc/0208042 | Tekin Dereli | M. Adak (Pamukkale Univ., Denizli, Turkey), T. Dereli (Koc Univ.,
Istanbul, Turkey), L.H. Ryder (Univ. of Kent, Canterbury, UK) | Dirac equation in spacetimes with torsion and non-metricity | 12 pages LATEX file, no figures, to appear in Int. J. Mod. Phys. D | Int.J.Mod.Phys. D12 (2003) 145-156 | 10.1142/S0218271803002445 | null | gr-qc | null | Dirac equation is written in a non-Riemannian spacetime with torsion and
non-metricity by lifting the connection from the tangent bundle to the spinor
bundle over spacetime. Foldy-Wouthuysen transformation of the Dirac equation in
a Schwarzschild background spacetime is considered and it is shown that both
the torsio... | [
{
"created": "Fri, 16 Aug 2002 10:26:45 GMT",
"version": "v1"
}
] | 2009-11-07 | [
[
"Adak",
"M.",
"",
"Pamukkale Univ., Denizli, Turkey"
],
[
"Dereli",
"T.",
"",
"Koc Univ.,\n Istanbul, Turkey"
],
[
"Ryder",
"L. H.",
"",
"Univ. of Kent, Canterbury, UK"
]
] | Dirac equation is written in a non-Riemannian spacetime with torsion and non-metricity by lifting the connection from the tangent bundle to the spinor bundle over spacetime. Foldy-Wouthuysen transformation of the Dirac equation in a Schwarzschild background spacetime is considered and it is shown that both the torsion ... |
1510.05172 | Adam Pound | Adam Pound | Second-order perturbation theory: problems on large scales | 25 pages. Submitted to PRD | Phys. Rev. D 92, 104047 (2015) | 10.1103/PhysRevD.92.104047 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In general-relativistic perturbation theory, a point mass accelerates away
from geodesic motion due to its gravitational self-force. Because the
self-force is small, one can often approximate the motion as geodesic. However,
it is well known that self-force effects accumulate over time, making the
geodesic approximat... | [
{
"created": "Sat, 17 Oct 2015 22:05:18 GMT",
"version": "v1"
}
] | 2016-08-23 | [
[
"Pound",
"Adam",
""
]
] | In general-relativistic perturbation theory, a point mass accelerates away from geodesic motion due to its gravitational self-force. Because the self-force is small, one can often approximate the motion as geodesic. However, it is well known that self-force effects accumulate over time, making the geodesic approximatio... |
1402.1967 | Ikjyot Singh Kohli | Ikjyot Singh Kohli and Michael C. Haslam | The Dynamics of a Two-Fluid Bianchi Type I Universe | null | null | null | null | gr-qc astro-ph.CO math-ph math.CA math.DS math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We use a dynamical systems approach based on the method of orthonormal frames
to study the dynamics of a two-fluid, non-tilted Bianchi Type I cosmological
model. In our model, one of the fluids is a fluid with bulk viscosity, while
the other fluid assumes the role of a cosmological constant and represents
nonnegative... | [
{
"created": "Sun, 9 Feb 2014 17:27:48 GMT",
"version": "v1"
},
{
"created": "Sun, 19 Jul 2015 22:46:16 GMT",
"version": "v2"
},
{
"created": "Tue, 20 Oct 2015 23:20:04 GMT",
"version": "v3"
}
] | 2015-10-22 | [
[
"Kohli",
"Ikjyot Singh",
""
],
[
"Haslam",
"Michael C.",
""
]
] | We use a dynamical systems approach based on the method of orthonormal frames to study the dynamics of a two-fluid, non-tilted Bianchi Type I cosmological model. In our model, one of the fluids is a fluid with bulk viscosity, while the other fluid assumes the role of a cosmological constant and represents nonnegative v... |
gr-qc/9812094 | Mohammad Nouri-Zonoz | Mohammad Nouri-Zonoz and Donald Lynden-Bell | Gravomagnetic Lensing by NUT Space | 29 pages including 15 figures, MNRAS format | Mon. Not. R. Astron. Soc. 292, (1997) | null | null | gr-qc | null | Using the fact that the null geodesics in NUT space lie on spatial cones, we
consider the gravomagnetic lens effect on light rays passing a NUT deflector.
We show that this effect changes the observed shape, size and orientation of a
source. Compared to the Schwarzschild lens, there is an extra shear (a
differential ... | [
{
"created": "Wed, 30 Dec 1998 17:57:01 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Nouri-Zonoz",
"Mohammad",
""
],
[
"Lynden-Bell",
"Donald",
""
]
] | Using the fact that the null geodesics in NUT space lie on spatial cones, we consider the gravomagnetic lens effect on light rays passing a NUT deflector. We show that this effect changes the observed shape, size and orientation of a source. Compared to the Schwarzschild lens, there is an extra shear (a differential tw... |
2003.04264 | Vasilis Oikonomou | E. Elizalde, S.D. Odintsov, V.K. Oikonomou, Tanmoy Paul | Extended matter bounce scenario in ghost free $f(R,\mathcal{G})$ gravity
compatible with GW170817 | NPB Accepted | null | 10.1016/j.nuclphysb.2020.114984 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the context of a ghost free $f(R,\mathcal{G})$ model, an extended matter
bounce scenario is studied where the form of the scale factor is given by $a(t)
= (a_0t^2 + 1)^n$. The ghost free character of the model is ensured by the
presence of a Lagrange multiplier, as developed in \cite{Nojiri:2018ouv}. The
condition... | [
{
"created": "Mon, 9 Mar 2020 17:10:16 GMT",
"version": "v1"
}
] | 2020-04-22 | [
[
"Elizalde",
"E.",
""
],
[
"Odintsov",
"S. D.",
""
],
[
"Oikonomou",
"V. K.",
""
],
[
"Paul",
"Tanmoy",
""
]
] | In the context of a ghost free $f(R,\mathcal{G})$ model, an extended matter bounce scenario is studied where the form of the scale factor is given by $a(t) = (a_0t^2 + 1)^n$. The ghost free character of the model is ensured by the presence of a Lagrange multiplier, as developed in \cite{Nojiri:2018ouv}. The conditions ... |
2010.05910 | Vasilisa Nikiforova | Vasilisa Nikiforova | Black holes in the long-range limit of torsion bigravity | null | null | 10.1103/PhysRevD.102.124007 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We continue the study of spherically symmetric black hole solutions in
torsion bigravity, a class of Einstein-Cartan-type gravity theories involving,
besides a metric, a massive propagating torsion field. In the infinite-range
limit, these theories admit asymptotically flat black hole solutions related to
the presenc... | [
{
"created": "Mon, 12 Oct 2020 16:40:00 GMT",
"version": "v1"
}
] | 2020-12-09 | [
[
"Nikiforova",
"Vasilisa",
""
]
] | We continue the study of spherically symmetric black hole solutions in torsion bigravity, a class of Einstein-Cartan-type gravity theories involving, besides a metric, a massive propagating torsion field. In the infinite-range limit, these theories admit asymptotically flat black hole solutions related to the presence ... |
2210.03950 | Xuefeng Zhang | Yi-De Jing, Lu Zheng, Shutao Yang, Xuefeng Zhang, Lingfeng Lu, Binbin
Tang, and Wei Su | Plasma noise in TianQin time delay interferometry | 12 pages, 15 figures, accepted by Phys. Rev. D | Phys. Rev. D 106, 082006 (2022) | 10.1103/PhysRevD.106.082006 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | TianQin is a proposed geocentric space-based gravitational wave observatory
mission, which requires time-delay interferometry (TDI) to cancel laser
frequency noise. With high demands for precision, solar-wind plasma environment
at $\sim 10^5$ km above the Earth may constitute a non-negligible noise source
to laser in... | [
{
"created": "Sat, 8 Oct 2022 07:36:15 GMT",
"version": "v1"
}
] | 2022-12-26 | [
[
"Jing",
"Yi-De",
""
],
[
"Zheng",
"Lu",
""
],
[
"Yang",
"Shutao",
""
],
[
"Zhang",
"Xuefeng",
""
],
[
"Lu",
"Lingfeng",
""
],
[
"Tang",
"Binbin",
""
],
[
"Su",
"Wei",
""
]
] | TianQin is a proposed geocentric space-based gravitational wave observatory mission, which requires time-delay interferometry (TDI) to cancel laser frequency noise. With high demands for precision, solar-wind plasma environment at $\sim 10^5$ km above the Earth may constitute a non-negligible noise source to laser inte... |
1301.2081 | Paul R. Anderson | Paul R. Anderson, Roberto Balbinot, Alessandro Fabbri and Renaud
Parentani | Hawking radiation correlations in Bose Einstein condensates using
quantum field theory in curved space | minor changes, references added, 38 pages, 14 figures | Phys. Rev. D87, 124018 (2013) | 10.1103/PhysRevD.87.124018 | null | gr-qc cond-mat.quant-gas hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The density density correlation function is computed for the Bogoliubov
pseudoparticles created in a Bose-Einstein condensate undergoing a black hole
flow. On the basis of the gravitational analogy, the method used relies only on
quantum field theory in curved spacetime techniques. A comparison with the
results obtai... | [
{
"created": "Thu, 10 Jan 2013 10:57:29 GMT",
"version": "v1"
},
{
"created": "Tue, 29 Jan 2013 16:45:56 GMT",
"version": "v2"
}
] | 2015-06-12 | [
[
"Anderson",
"Paul R.",
""
],
[
"Balbinot",
"Roberto",
""
],
[
"Fabbri",
"Alessandro",
""
],
[
"Parentani",
"Renaud",
""
]
] | The density density correlation function is computed for the Bogoliubov pseudoparticles created in a Bose-Einstein condensate undergoing a black hole flow. On the basis of the gravitational analogy, the method used relies only on quantum field theory in curved spacetime techniques. A comparison with the results obtaine... |
1408.2729 | Adam D. Helfer | Adam D. Helfer | Fermions and gravitational gyrotropy | To appear in PRD. Considerably expanded from the earlier version;
numerical results for effects on the CMB are given. The only substantive
correction to the earlier version is to the overall sign of the effect. 21
pages, 4 figures | Phys. Rev. D 94, 124011 (2016) | 10.1103/PhysRevD.94.124011 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In conventional general relativity without torsion, high-frequency
gravitational waves couple to the chiral number density of spin one-half
quanta: the polarization of the waves is rotated by $2\pi N_5 {\ell_{\rm
Pl}^2}$, where $N_5$ is the chiral column density and $\ell_{\rm Pl}$ is the
Planck length. This means th... | [
{
"created": "Tue, 12 Aug 2014 14:48:01 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Nov 2016 21:27:12 GMT",
"version": "v2"
}
] | 2016-12-14 | [
[
"Helfer",
"Adam D.",
""
]
] | In conventional general relativity without torsion, high-frequency gravitational waves couple to the chiral number density of spin one-half quanta: the polarization of the waves is rotated by $2\pi N_5 {\ell_{\rm Pl}^2}$, where $N_5$ is the chiral column density and $\ell_{\rm Pl}$ is the Planck length. This means that... |
2209.10197 | Kornel Sailer Dr. | S. Nagy, K. Sailer | Interpolation formulas for asymptotically safe cosmology | 13 pages | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Simple interpolation formulas are proposed for the description of the
renormalization group (RG) scale dependences of the gravitational couplings in
the framework of the 2-parameters Einstein-Hilbert (EH) theory of gravity and
applied to a simple, analytically solvable, spatially homogeneous and
isotropic, spatially ... | [
{
"created": "Wed, 21 Sep 2022 08:48:26 GMT",
"version": "v1"
},
{
"created": "Thu, 24 Nov 2022 06:50:26 GMT",
"version": "v2"
}
] | 2022-11-28 | [
[
"Nagy",
"S.",
""
],
[
"Sailer",
"K.",
""
]
] | Simple interpolation formulas are proposed for the description of the renormalization group (RG) scale dependences of the gravitational couplings in the framework of the 2-parameters Einstein-Hilbert (EH) theory of gravity and applied to a simple, analytically solvable, spatially homogeneous and isotropic, spatially fl... |
1303.7219 | Frans Klinkhamer | F.R. Klinkhamer, C. Rahmede | A nonsingular spacetime defect | 20 pages, v8: published version | Phys. Rev. D 89, 084064 (2014) | 10.1103/PhysRevD.89.084064 | KA-TP-07-2013 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A nonsingular localized static classical solution is constructed for standard
Einstein gravity coupled to an $SO(3)\times SO(3)$ chiral model of scalars
(Skyrme model). This solution corresponds to a spacetime defect and its
construction proceeds in three steps. First, an \textit{Ansatz} is presented
for a solution w... | [
{
"created": "Thu, 28 Mar 2013 19:32:57 GMT",
"version": "v1"
},
{
"created": "Mon, 1 Apr 2013 18:45:44 GMT",
"version": "v2"
},
{
"created": "Thu, 4 Apr 2013 17:22:40 GMT",
"version": "v3"
},
{
"created": "Mon, 8 Apr 2013 17:56:07 GMT",
"version": "v4"
},
{
"crea... | 2015-06-15 | [
[
"Klinkhamer",
"F. R.",
""
],
[
"Rahmede",
"C.",
""
]
] | A nonsingular localized static classical solution is constructed for standard Einstein gravity coupled to an $SO(3)\times SO(3)$ chiral model of scalars (Skyrme model). This solution corresponds to a spacetime defect and its construction proceeds in three steps. First, an \textit{Ansatz} is presented for a solution wit... |
1611.06701 | Bibhas Majhi Ranjan | Rabin Banerjee, Bibhas Ranjan Majhi, Saurav Samanta | Thermogeometric phase transition in a unified framework | Minor changes, to appear in Phys. Lett. B | Phys. Lett. B767 (2017) 25 - 28 | 10.1016/j.physletb.2017.01.040 | null | gr-qc cond-mat.stat-mech hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using geomterothermodynamics (GTD), we investigate the phase transition of
black hole in a metric independent way. We show that for any black hole,
curvature scalar (of equilibrium state space geometry) is singular at the point
where specific heat diverges. Previously such a result could only be shown by
taking speci... | [
{
"created": "Mon, 21 Nov 2016 09:49:35 GMT",
"version": "v1"
},
{
"created": "Fri, 20 Jan 2017 06:56:15 GMT",
"version": "v2"
}
] | 2017-02-03 | [
[
"Banerjee",
"Rabin",
""
],
[
"Majhi",
"Bibhas Ranjan",
""
],
[
"Samanta",
"Saurav",
""
]
] | Using geomterothermodynamics (GTD), we investigate the phase transition of black hole in a metric independent way. We show that for any black hole, curvature scalar (of equilibrium state space geometry) is singular at the point where specific heat diverges. Previously such a result could only be shown by taking specifi... |
2305.02768 | Chiranjeeb Singha | Shauvik Biswas, Chiranjeeb Singha | Looking for static interior solutions of Buchdahl star with $p_r=0,
p_t=k\rho$ in general relativity and pure Lovelock theories | 10 pages, Comments are welcome | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We find static fluid solutions of Einstein and pure Lovelock equations with
$p_r=0$, $p_t=k\rho$, which could be possible models for the interior of a
Buchdahl-like star. Buchdahl star is a limiting stellar configuration without a
horizon whose formation does not need any exotic matter.
| [
{
"created": "Thu, 4 May 2023 12:14:09 GMT",
"version": "v1"
}
] | 2023-05-05 | [
[
"Biswas",
"Shauvik",
""
],
[
"Singha",
"Chiranjeeb",
""
]
] | We find static fluid solutions of Einstein and pure Lovelock equations with $p_r=0$, $p_t=k\rho$, which could be possible models for the interior of a Buchdahl-like star. Buchdahl star is a limiting stellar configuration without a horizon whose formation does not need any exotic matter. |
1512.03239 | Andronikos Paliathanasis | Andronikos Paliathanasis | $f(R)$-gravity from Killing Tensors | 20 pages, 4 figures, minor corrections, to appear in Classical and
Quantum Gravity | null | 10.1088/0264-9381/33/7/075012 | null | gr-qc math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider $f\left(R\right) $-gravity in a
Friedmann-Lema\^itre-Robertson-Walker spacetime with zero spatial curvature. We
apply the Killing tensors of the minisuperspace in order to specify the
functional form of $f\left(R\right) $ and the field equations to be invariant
under Lie-B\"acklund transformations which a... | [
{
"created": "Thu, 10 Dec 2015 12:59:56 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Jan 2016 12:31:32 GMT",
"version": "v2"
}
] | 2016-03-23 | [
[
"Paliathanasis",
"Andronikos",
""
]
] | We consider $f\left(R\right) $-gravity in a Friedmann-Lema\^itre-Robertson-Walker spacetime with zero spatial curvature. We apply the Killing tensors of the minisuperspace in order to specify the functional form of $f\left(R\right) $ and the field equations to be invariant under Lie-B\"acklund transformations which are... |
1105.1974 | Mauricio Bellini | Mauricio Bellini (IFIMAR - Mar del Plata University and CONICET) | Super exponential inflation from a dynamical foliation of a 5D vacuum
state | Final version, to be published in Phys. Lett. B | null | 10.1016/j.physletb.2011.06.071 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We introduce super exponential inflation ($\omega < -1$) from a 5D
Riemann-flat canonical metric on which we make a dynamical foliation. The
resulting metric describes a super accelerated expansion for the early universe
well-known as super exponential inflation that, for very large times, tends to
an asymptotic de S... | [
{
"created": "Tue, 10 May 2011 15:27:25 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Jun 2011 12:54:54 GMT",
"version": "v2"
},
{
"created": "Wed, 29 Jun 2011 22:26:04 GMT",
"version": "v3"
},
{
"created": "Mon, 15 Aug 2011 16:13:53 GMT",
"version": "v4"
}
] | 2015-05-28 | [
[
"Bellini",
"Mauricio",
"",
"IFIMAR - Mar del Plata University and CONICET"
]
] | We introduce super exponential inflation ($\omega < -1$) from a 5D Riemann-flat canonical metric on which we make a dynamical foliation. The resulting metric describes a super accelerated expansion for the early universe well-known as super exponential inflation that, for very large times, tends to an asymptotic de Sit... |
2005.00001 | Naouel Boulkaboul | Naouel Boulkaboul | Can Gibbons-Hawking Radiation and Inflation Arise Due to Spacetime
Quanta? | typos corrected, results unchanged | Physics of the Dark Universe 29C (2020) 100553 | 10.1016/j.dark.2020.100553 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this study, we provide an alternatively reformulated interpretation of
Gibbons-Hawking radiation as well as inflation. By using a spacetime
quantization procedure, proposed recently by L.C. C\'eleri et al., in anti-de
Sitter space we show that Gibbons-Hawking radiation is an intrinsic property of
the concerned spa... | [
{
"created": "Thu, 30 Apr 2020 23:30:29 GMT",
"version": "v1"
},
{
"created": "Thu, 7 May 2020 17:12:14 GMT",
"version": "v2"
}
] | 2020-05-08 | [
[
"Boulkaboul",
"Naouel",
""
]
] | In this study, we provide an alternatively reformulated interpretation of Gibbons-Hawking radiation as well as inflation. By using a spacetime quantization procedure, proposed recently by L.C. C\'eleri et al., in anti-de Sitter space we show that Gibbons-Hawking radiation is an intrinsic property of the concerned space... |
1110.6274 | Valeri Frolov P | Valeri P. Frolov | Weakly magnetized black holes as particle accelerators | 7 pages, 5 figures | null | 10.1103/PhysRevD.85.024020 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study collision of particles in the vicinity of a horizon of a weakly
magnetized non-rotating black hole. In the presence of the magnetic field
innermost stable circular orbits (ISCO) of charged particles can be located
close to the horizon. We demonstrate that for a collision of two particles, one
of which is cha... | [
{
"created": "Fri, 28 Oct 2011 08:20:22 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Nov 2011 08:55:55 GMT",
"version": "v2"
},
{
"created": "Wed, 7 Dec 2011 08:29:22 GMT",
"version": "v3"
}
] | 2015-06-03 | [
[
"Frolov",
"Valeri P.",
""
]
] | We study collision of particles in the vicinity of a horizon of a weakly magnetized non-rotating black hole. In the presence of the magnetic field innermost stable circular orbits (ISCO) of charged particles can be located close to the horizon. We demonstrate that for a collision of two particles, one of which is charg... |
gr-qc/0211094 | Vitor Cardoso | Vitor Cardoso, Jos\'e P. S. Lemos | Gravitational Radiation from the radial infall of highly relativistic
point particles into Kerr black holes | 15 pages, REVTEX4. Some comments and references added | Phys.Rev.D67:084005,2003 | 10.1103/PhysRevD.67.084005 | null | gr-qc astro-ph hep-ph hep-th | null | In this paper, we consider the gravitational radiation generated by the
collision of highly relativistic particles with rotating Kerr black holes. We
use the Sasaki-Nakamura formalism to compute the waveform, energy spectra and
total energy radiated during this process. We show that the gravitational
spectrum for hig... | [
{
"created": "Wed, 27 Nov 2002 13:41:07 GMT",
"version": "v1"
},
{
"created": "Fri, 3 Jan 2003 13:46:14 GMT",
"version": "v2"
}
] | 2010-11-19 | [
[
"Cardoso",
"Vitor",
""
],
[
"Lemos",
"José P. S.",
""
]
] | In this paper, we consider the gravitational radiation generated by the collision of highly relativistic particles with rotating Kerr black holes. We use the Sasaki-Nakamura formalism to compute the waveform, energy spectra and total energy radiated during this process. We show that the gravitational spectrum for high-... |
gr-qc/0506015 | Neil J. Cornish | Jeff Crowder and Neil J. Cornish | Beyond LISA: Exploring Future Gravitational Wave Missions | 9 pages, 10 figures, published version | Phys.Rev. D72 (2005) 083005 | 10.1103/PhysRevD.72.083005 | null | gr-qc | null | The Advanced Laser Interferometer Antenna (ALIA) and the Big Bang Observer
(BBO) have been proposed as follow on missions to the Laser Interferometer
Space Antenna (LISA). Here we study the capabilities of these observatories,
and how they relate to the science goals of the missions. We find that the
Advanced Laser I... | [
{
"created": "Fri, 3 Jun 2005 16:46:52 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Jun 2005 04:35:37 GMT",
"version": "v2"
},
{
"created": "Mon, 17 Oct 2005 19:04:42 GMT",
"version": "v3"
}
] | 2009-11-11 | [
[
"Crowder",
"Jeff",
""
],
[
"Cornish",
"Neil J.",
""
]
] | The Advanced Laser Interferometer Antenna (ALIA) and the Big Bang Observer (BBO) have been proposed as follow on missions to the Laser Interferometer Space Antenna (LISA). Here we study the capabilities of these observatories, and how they relate to the science goals of the missions. We find that the Advanced Laser Int... |
2309.14912 | Andreu Maso-Ferrando | Andreu Mas\'o-Ferrando, Nicolas Sanchis-Gual, Jos\'e A. Font, Gonzalo
J. Olmo | Numerical evolutions of boson stars in Palatini $f(\mathcal{R})$ gravity | null | null | null | null | gr-qc astro-ph.HE | http://creativecommons.org/licenses/by/4.0/ | We investigate the time evolution of spherically symmetric boson stars in
Palatini $f(\mathcal{R})$ gravity through Numerical Relativity computations.
Employing a novel approach that establishes a correspondence between modified
gravity with scalar matter and General Relativity with modified scalar matter,
we are abl... | [
{
"created": "Tue, 26 Sep 2023 13:14:26 GMT",
"version": "v1"
}
] | 2023-09-27 | [
[
"Masó-Ferrando",
"Andreu",
""
],
[
"Sanchis-Gual",
"Nicolas",
""
],
[
"Font",
"José A.",
""
],
[
"Olmo",
"Gonzalo J.",
""
]
] | We investigate the time evolution of spherically symmetric boson stars in Palatini $f(\mathcal{R})$ gravity through Numerical Relativity computations. Employing a novel approach that establishes a correspondence between modified gravity with scalar matter and General Relativity with modified scalar matter, we are able ... |
1812.01620 | Richard Brito | Shrobana Ghosh, Emanuele Berti, Richard Brito and Mauricio Richartz | Follow-up signals from superradiant instabilities of black hole merger
remnants | v1:10 pages, 8 figures, 2 tables; v2: matches published version | Phys. Rev. D 99, 104030 (2019) | 10.1103/PhysRevD.99.104030 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Superradiant instabilities can trigger the formation of bosonic clouds around
rotating black holes. If the bosonic field growth is sufficiently fast, these
clouds could form shortly after a binary black hole merger. Such clouds are
continuous sources of gravitational waves whose detection (or lack thereof) can
probe ... | [
{
"created": "Tue, 4 Dec 2018 19:00:08 GMT",
"version": "v1"
},
{
"created": "Sat, 25 May 2019 08:26:39 GMT",
"version": "v2"
}
] | 2019-05-28 | [
[
"Ghosh",
"Shrobana",
""
],
[
"Berti",
"Emanuele",
""
],
[
"Brito",
"Richard",
""
],
[
"Richartz",
"Mauricio",
""
]
] | Superradiant instabilities can trigger the formation of bosonic clouds around rotating black holes. If the bosonic field growth is sufficiently fast, these clouds could form shortly after a binary black hole merger. Such clouds are continuous sources of gravitational waves whose detection (or lack thereof) can probe th... |
gr-qc/9910115 | Horacio Casini | H. Casini and R. Montemayor | Covariant description for superfluids in gravitational fields | 22 pages, no figures | null | null | null | gr-qc | null | In this paper we develop a formalism to describe a superfluid in a
gravitational background. This formalism is based on a covariant generalization
of the field description for a superconductor in terms of a U(1) spontaneous
symmetry breaking. We study the stability of the solutions for a vortexless
fluid and the forc... | [
{
"created": "Mon, 1 Nov 1999 17:26:07 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Casini",
"H.",
""
],
[
"Montemayor",
"R.",
""
]
] | In this paper we develop a formalism to describe a superfluid in a gravitational background. This formalism is based on a covariant generalization of the field description for a superconductor in terms of a U(1) spontaneous symmetry breaking. We study the stability of the solutions for a vortexless fluid and the force ... |
gr-qc/9605009 | George Emanuel Avraam Matsas | George E.A. Matsas | Rindler and Minkowski particles relationship revisited | To appear in Physics Letters B, 9 pages, LATEX, no-figures | Phys.Lett. B380 (1996) 24-28 | 10.1016/0370-2693(96)00493-5 | null | gr-qc | null | We show that the emission of a Minkowski particle by a general class of
scalar sources as described by inertial observers corresponds to either the
emission or the absorption of a Rindler particle as described by uniformly
accelerated observers. Our results are discussed in connection with the current
controversy whe... | [
{
"created": "Sun, 5 May 1996 22:20:03 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Matsas",
"George E. A.",
""
]
] | We show that the emission of a Minkowski particle by a general class of scalar sources as described by inertial observers corresponds to either the emission or the absorption of a Rindler particle as described by uniformly accelerated observers. Our results are discussed in connection with the current controversy wheth... |
2006.11889 | Angel Rincon | Angel Rincon and Grigoris Panotopoulos | Quasinormal modes of an improved Schwarzschild black hole | v2: 11 pages, 6 figures, 4 tables. Published in Physics of the Dark
Universe, reference added | Physics of the Dark Universe, ISSN: 2212-6864, Vol: 30, Year:
2020, Page: 100639 | 10.1016/j.dark.2020.100639 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compute the quasinormal frequencies for scalar and electromagnetic
perturbations of an improved Schwarzschild geometry in the framework of
asymptotically safe gravity, which is one of the approaches to quantum gravity.
Adopting the widely used WKB semi-classical approximation, we investigate the
impact on the spec... | [
{
"created": "Sun, 21 Jun 2020 19:42:11 GMT",
"version": "v1"
},
{
"created": "Wed, 1 Jul 2020 21:29:17 GMT",
"version": "v2"
}
] | 2020-07-03 | [
[
"Rincon",
"Angel",
""
],
[
"Panotopoulos",
"Grigoris",
""
]
] | We compute the quasinormal frequencies for scalar and electromagnetic perturbations of an improved Schwarzschild geometry in the framework of asymptotically safe gravity, which is one of the approaches to quantum gravity. Adopting the widely used WKB semi-classical approximation, we investigate the impact on the spectr... |
gr-qc/0611055 | Ilya Lvovich Shapiro | Ilya L. Shapiro (UFJF, Brazil), Joan Sola (University of Barcelona) | Cosmological Constant Problems and Renormalization Group | 12 pages, LaTeX, based on the on the talk at IRGAC-2006 (Barcelona,
July 11-15, 2006), misprints corrected, comment on anthropic approach
modified, some references added, accepted in Journal of Physics A | J.Phys.A40:6583-6593,2007 | 10.1088/1751-8113/40/25/S03 | DF-UFJF/01-2006 | gr-qc | null | The Cosmological Constant Problem emerges when Quantum Field Theory is
applied to the gravitational theory, due to the enormous magnitude of the
induced energy of the vacuum. The unique known solution of this problem
involves an extremely precise fine-tuning of the vacuum counterpart. We review
a few of the existing ... | [
{
"created": "Wed, 8 Nov 2006 22:19:48 GMT",
"version": "v1"
},
{
"created": "Fri, 5 Jan 2007 18:55:10 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Shapiro",
"Ilya L.",
"",
"UFJF, Brazil"
],
[
"Sola",
"Joan",
"",
"University of Barcelona"
]
] | The Cosmological Constant Problem emerges when Quantum Field Theory is applied to the gravitational theory, due to the enormous magnitude of the induced energy of the vacuum. The unique known solution of this problem involves an extremely precise fine-tuning of the vacuum counterpart. We review a few of the existing ap... |
0912.4563 | David Wiltshire | David L. Wiltshire | From time to timescape - Einstein's unfinished revolution | 13 pages, 3 figures; A runner-up in the 2008 FQXi Essay Contest on
the Nature of Time; Int. J. Mod. Phys. D 18, in press | Int.J.Mod.Phys.D18:2121-2134,2009 | 10.1142/S0218271809016193 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | I argue that Einstein overlooked an important aspect of the relativity of
time in never quite realizing his quest to embody Mach's principle in his
theory of gravity. As a step towards that goal, I broaden the Strong
Equivalence Principle to a new principle of physics, the Cosmological
Equivalence Principle, to accou... | [
{
"created": "Wed, 23 Dec 2009 08:55:56 GMT",
"version": "v1"
}
] | 2010-04-21 | [
[
"Wiltshire",
"David L.",
""
]
] | I argue that Einstein overlooked an important aspect of the relativity of time in never quite realizing his quest to embody Mach's principle in his theory of gravity. As a step towards that goal, I broaden the Strong Equivalence Principle to a new principle of physics, the Cosmological Equivalence Principle, to account... |
2107.02562 | Horacio Santana Vieira | H. S. Vieira, V. B. Bezerra and C. R. Muniz | Instability of the charged massive scalar field on the Kerr-Newman black
hole spacetime | 29 pages, 8 figures | Eur. Phys. J. C 82, 932 (2022) | 10.1140/epjc/s10052-022-10908-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the quasibound states of charged massive scalar fields in the
Kerr-Newman black hole spacetime by using a new approach recently developed,
which uses the polynomial conditions of the Heun functions. We calculate the
resonant frequencies related to the spectrum of quasibound states, as well as
its corre... | [
{
"created": "Tue, 6 Jul 2021 12:04:05 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Oct 2022 13:21:46 GMT",
"version": "v2"
}
] | 2022-10-24 | [
[
"Vieira",
"H. S.",
""
],
[
"Bezerra",
"V. B.",
""
],
[
"Muniz",
"C. R.",
""
]
] | We investigate the quasibound states of charged massive scalar fields in the Kerr-Newman black hole spacetime by using a new approach recently developed, which uses the polynomial conditions of the Heun functions. We calculate the resonant frequencies related to the spectrum of quasibound states, as well as its corresp... |
1508.03832 | Tiberiu Harko | Piyabut Burikham, Krai Cheamsawat, Tiberiu Harko, Matthew J. Lake | The minimum mass of a spherically symmetric object in $D$-dimensions,
and its implications for the mass hierarchy problem | 16 pages, one figure; Section IV extended; references added; accepted
for publication in EPJC | Eur. Phys. J. C (2015) 75:442 | 10.1140/epjc/s10052-015-3673-5 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The existence of both a minimum mass and a minimum density in nature, in the
presence of a positive cosmological constant, is one of the most intriguing
results in classical general relativity. These results follow rigorously from
the Buchdahl inequalities in four dimensional de Sitter space. In this work, we
obtain ... | [
{
"created": "Sun, 16 Aug 2015 15:00:41 GMT",
"version": "v1"
},
{
"created": "Mon, 7 Sep 2015 18:30:59 GMT",
"version": "v2"
}
] | 2015-11-30 | [
[
"Burikham",
"Piyabut",
""
],
[
"Cheamsawat",
"Krai",
""
],
[
"Harko",
"Tiberiu",
""
],
[
"Lake",
"Matthew J.",
""
]
] | The existence of both a minimum mass and a minimum density in nature, in the presence of a positive cosmological constant, is one of the most intriguing results in classical general relativity. These results follow rigorously from the Buchdahl inequalities in four dimensional de Sitter space. In this work, we obtain th... |
1807.03802 | Dejan Gajic | Yannis Angelopoulos and Stefanos Aretakis and Dejan Gajic | Late-time asymptotics for the wave equation on extremal
Reissner-Nordstr\"om backgrounds | 87 pages, 10 figures; version accepted for publication | Advances in Mathematics 375, 107363 (2020) | 10.1016/j.aim.2020.107363 | null | gr-qc math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We derive the precise late-time asymptotics for solutions to the wave
equation on extremal Reissner-Nordstr\"om black holes and explicitly express
the leading-order coefficients in terms of the initial data. Our method is
based on purely physical space techniques. We derive novel weighted energy
hierarchies and devel... | [
{
"created": "Tue, 10 Jul 2018 18:03:53 GMT",
"version": "v1"
},
{
"created": "Wed, 24 Feb 2021 17:24:50 GMT",
"version": "v2"
}
] | 2021-02-25 | [
[
"Angelopoulos",
"Yannis",
""
],
[
"Aretakis",
"Stefanos",
""
],
[
"Gajic",
"Dejan",
""
]
] | We derive the precise late-time asymptotics for solutions to the wave equation on extremal Reissner-Nordstr\"om black holes and explicitly express the leading-order coefficients in terms of the initial data. Our method is based on purely physical space techniques. We derive novel weighted energy hierarchies and develop... |
gr-qc/0109072 | Jacques L. Rubin | Jacques L. Rubin | Pfaff systems theory and the unifications of gravitation and
electromagnetism | 29 pages, 25 references, no figures, submitted in May 2001 to J.
Geom. Phys | null | null | Preprint INLN 2001/14 | gr-qc | null | We show in the framework of Pfaff systems theory, the functional dependences
of the general analytic solutions of a suitable system of involutive
differential equations describing the differences between the analytic
solutions of the conformal and "Poincar\'e" Lie equations. Then we ascribe to
the infinitesimal varia... | [
{
"created": "Thu, 20 Sep 2001 10:26:33 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Rubin",
"Jacques L.",
""
]
] | We show in the framework of Pfaff systems theory, the functional dependences of the general analytic solutions of a suitable system of involutive differential equations describing the differences between the analytic solutions of the conformal and "Poincar\'e" Lie equations. Then we ascribe to the infinitesimal variati... |
2403.18446 | Emir Syahreza Fadhilla | Emir Syahreza Fadhilla, Bobby Eka Gunara, Agus Suroso, Ardian Nata
Atmaja | Cosmic Inflation From Fluctuating Baby-Skyrme Brane | 14 pages, 3 figures, single column format, the analysis of dynamical
system are revised for both high and low energy cases, accepted in Annals of
Physics | null | 10.1016/j.aop.2024.169766 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | In this work, we explore the inflationary dynamics induced by small
fluctuations on the Skyrme brane, characterized by a time-dependent
perturbative function $\tilde{\phi}$. In the low-energy regime, the model
successfully reproduces standard inflation, with a potential term dictated by
the Skyrmion at the brane. Gra... | [
{
"created": "Wed, 27 Mar 2024 11:05:26 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Aug 2024 08:25:17 GMT",
"version": "v2"
}
] | 2024-08-15 | [
[
"Fadhilla",
"Emir Syahreza",
""
],
[
"Gunara",
"Bobby Eka",
""
],
[
"Suroso",
"Agus",
""
],
[
"Atmaja",
"Ardian Nata",
""
]
] | In this work, we explore the inflationary dynamics induced by small fluctuations on the Skyrme brane, characterized by a time-dependent perturbative function $\tilde{\phi}$. In the low-energy regime, the model successfully reproduces standard inflation, with a potential term dictated by the Skyrmion at the brane. Gravi... |
2309.06333 | Elliot Nash | Steffen Gielen and Elliot Nash | Unimodular Pleba\'{n}ski Gravity | 11 pages | Class. Quant. Grav. 41 (2024) 085009 | 10.1088/1361-6382/ad3277 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present new action principles for unimodular gravity, defined in the
chiral Pleba\'{n}ski formulation based on (complex) two-forms and a complex
${\rm SO}(3)$ connection. In these theories, just as in their analogues in the
metric formulation, the cosmological constant does not take a prescribed value
but is an in... | [
{
"created": "Tue, 12 Sep 2023 15:49:18 GMT",
"version": "v1"
},
{
"created": "Thu, 25 Jan 2024 14:56:31 GMT",
"version": "v2"
}
] | 2024-03-29 | [
[
"Gielen",
"Steffen",
""
],
[
"Nash",
"Elliot",
""
]
] | We present new action principles for unimodular gravity, defined in the chiral Pleba\'{n}ski formulation based on (complex) two-forms and a complex ${\rm SO}(3)$ connection. In these theories, just as in their analogues in the metric formulation, the cosmological constant does not take a prescribed value but is an inte... |
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