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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
gr-qc/0311092 | Aidan Burch | Aidan Burch | Histories Electromagnetism | 26 pages | J.Math.Phys. 45 (2004) 2153-2170 | 10.1063/1.1723702 | Imperial/TP/03-4/4 | gr-qc quant-ph | null | Working within the HPO (History Projection Operator) Consistent Histories
formalism, we follow the work of Savvidou on (scalar) field theory and that of
Savvidou and Anastopolous on (first-class) constrained systems to write a
histories theory (both classical and quantum) of Electromagnetism. We focus
particularly on... | [
{
"created": "Fri, 28 Nov 2003 12:44:08 GMT",
"version": "v1"
},
{
"created": "Sat, 29 Nov 2003 13:35:13 GMT",
"version": "v2"
}
] | 2009-11-10 | [
[
"Burch",
"Aidan",
""
]
] | Working within the HPO (History Projection Operator) Consistent Histories formalism, we follow the work of Savvidou on (scalar) field theory and that of Savvidou and Anastopolous on (first-class) constrained systems to write a histories theory (both classical and quantum) of Electromagnetism. We focus particularly on t... |
2405.18277 | Indranil Chakraborty | Subhajit Barman, Indranil Chakraborty, and Sajal Mukherjee | Signatures of gravitational wave memory in the radiative process of
entangled quantum probes | 22 pages, 5 figures, comments are welcome | null | null | null | gr-qc hep-th quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article, we examine entangled quantum probes in geodesic trajectories
in a background with gravitational wave (GW) burst. In particular, these
quantum probes are prepared initially either in the symmetric or anti-symmetric
Bell's states and we study the radiative process as the GW burst passes. Our
considered... | [
{
"created": "Tue, 28 May 2024 15:26:38 GMT",
"version": "v1"
}
] | 2024-05-29 | [
[
"Barman",
"Subhajit",
""
],
[
"Chakraborty",
"Indranil",
""
],
[
"Mukherjee",
"Sajal",
""
]
] | In this article, we examine entangled quantum probes in geodesic trajectories in a background with gravitational wave (GW) burst. In particular, these quantum probes are prepared initially either in the symmetric or anti-symmetric Bell's states and we study the radiative process as the GW burst passes. Our considered G... |
0805.4400 | Baojiu Li | Baojiu Li, John D. Barrow, David F. Mota, HongSheng Zhao | Testing Alternative Theories of Dark Matter with the CMB | 14 pages, 8 figures | Phys.Rev.D78:064021,2008 | 10.1103/PhysRevD.78.064021 | null | gr-qc astro-ph hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a method to study and constrain modified gravity theories for dark
matter using CMB temperature anisotropies and polarization. We assume that the
theories considered here have already passed the matter power-spectrum test of
large-scale structure. With this requirement met, we show that a modified
gravity ... | [
{
"created": "Wed, 28 May 2008 18:42:19 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Li",
"Baojiu",
""
],
[
"Barrow",
"John D.",
""
],
[
"Mota",
"David F.",
""
],
[
"Zhao",
"HongSheng",
""
]
] | We propose a method to study and constrain modified gravity theories for dark matter using CMB temperature anisotropies and polarization. We assume that the theories considered here have already passed the matter power-spectrum test of large-scale structure. With this requirement met, we show that a modified gravity th... |
2007.05486 | Peter K.F. Kuhfittig | Peter K.F. Kuhfittig | Traversable wormholes and the Brouwer fixed-point theorem | 6 pages, 1 figure | J. Appl. Math. and Phys. (JAMP), vol. 8, 1263-1268 (2020) | 10.4236/jamp.2020.87096 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Brouwer fixed-point theorem in topology states that for any continuous
mapping $f$ on a compact convex set into itself admits a fixed point, i.e., a
point $x_0$ such that $f(x_0)=x_0$. Under certain conditions, this fixed point
corresponds to the throat of a traversable wormhole, i.e., $b(r_0)=r_0$ for the
shape ... | [
{
"created": "Fri, 10 Jul 2020 17:06:43 GMT",
"version": "v1"
},
{
"created": "Sat, 25 Sep 2021 17:41:12 GMT",
"version": "v2"
}
] | 2021-09-28 | [
[
"Kuhfittig",
"Peter K. F.",
""
]
] | The Brouwer fixed-point theorem in topology states that for any continuous mapping $f$ on a compact convex set into itself admits a fixed point, i.e., a point $x_0$ such that $f(x_0)=x_0$. Under certain conditions, this fixed point corresponds to the throat of a traversable wormhole, i.e., $b(r_0)=r_0$ for the shape fu... |
1003.4961 | Slava G. Turyshev | Slava G. Turyshev, William Farr, William M. Folkner, Andre R. Girerd,
Hamid Hemmati, Thomas W. Murphy, Jr., James G. Williams, and John J. Degnan | Advancing Tests of Relativistic Gravity via Laser Ranging to Phobos | 25 pages, 10 figures, 9 tables | Experimental Astronomy 28, 209-249 (2010) | 10.1007/s10686-010-9199-9 | null | gr-qc physics.space-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Phobos Laser Ranging (PLR) is a concept for a space mission designed to
advance tests of relativistic gravity in the solar system. PLR's primary
objective is to measure the curvature of space around the Sun, represented by
the Eddington parameter $\gamma$, with an accuracy of two parts in $10^7$,
thereby improving to... | [
{
"created": "Thu, 25 Mar 2010 17:50:05 GMT",
"version": "v1"
},
{
"created": "Fri, 3 Sep 2010 06:14:38 GMT",
"version": "v2"
}
] | 2012-08-27 | [
[
"Turyshev",
"Slava G.",
""
],
[
"Farr",
"William",
""
],
[
"Folkner",
"William M.",
""
],
[
"Girerd",
"Andre R.",
""
],
[
"Hemmati",
"Hamid",
""
],
[
"Murphy,",
"Thomas W.",
"Jr."
],
[
"Williams",
"James G.",
... | Phobos Laser Ranging (PLR) is a concept for a space mission designed to advance tests of relativistic gravity in the solar system. PLR's primary objective is to measure the curvature of space around the Sun, represented by the Eddington parameter $\gamma$, with an accuracy of two parts in $10^7$, thereby improving toda... |
gr-qc/0504062 | Ludovico Carbone | S. Vitale (for LTP Collaboration) | The LTP Experiment on the LISA Pathfinder Mission | Submitted to Classical and Quantum Gravity, Proceedings of the 5th
LISA Symposium, ESTEC, Noordwijk, The Netherlands, 12-15 July 2004 | null | null | null | gr-qc | null | We report on the development of the LISA Technology Package (LTP) experiment
that will fly on board the LISA Pathfinder mission of the European Space Agency
in 2008. We first summarize the science rationale of the experiment aimed at
showing the operational feasibility of the so called Transverse-Traceless
coordinate... | [
{
"created": "Thu, 14 Apr 2005 10:45:13 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Vitale",
"S.",
"",
"for LTP Collaboration"
]
] | We report on the development of the LISA Technology Package (LTP) experiment that will fly on board the LISA Pathfinder mission of the European Space Agency in 2008. We first summarize the science rationale of the experiment aimed at showing the operational feasibility of the so called Transverse-Traceless coordinate f... |
gr-qc/0001037 | Simonetta Frittelli | Simonetta Frittelli, Thomas P. Kling and Ezra T. Newman | Spacetime perspective of Schwarzschild lensing | 22 pages, 6 figures, to appear in Phys. Rev. D | Phys.Rev. D61 (2000) 064021 | 10.1103/PhysRevD.61.064021 | null | gr-qc | null | We propose a definition of an exact lens equation without reference to a
background spacetime, and construct the exact lens equation explicitly in the
case of Schwarzschild spacetime. For the Schwarzschild case, we give exact
expressions for the angular-diameter distance to the sources as well as for the
magnificatio... | [
{
"created": "Thu, 13 Jan 2000 21:39:21 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Frittelli",
"Simonetta",
""
],
[
"Kling",
"Thomas P.",
""
],
[
"Newman",
"Ezra T.",
""
]
] | We propose a definition of an exact lens equation without reference to a background spacetime, and construct the exact lens equation explicitly in the case of Schwarzschild spacetime. For the Schwarzschild case, we give exact expressions for the angular-diameter distance to the sources as well as for the magnification ... |
1004.0913 | Yuri Pavlov | A. A. Grib and Yu. V. Pavlov | On the collisions between particles in the vicinity of rotating black
holes | 5 pages, no figure, published version. arXiv admin note: substantial
text overlap with arXiv:1001.0756 | JETP Letters 92 (2010) 125-129 | 10.1134/S0021364010150014 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Scattering of particles in the gravitational field of rotating black holes is
considered. It is shown that scattering energy of particles in the centre of
mass system can obtain very large values not only for extremal black holes but
also for nonextremal ones. Extraction of energy after the collision is
investigated.... | [
{
"created": "Tue, 6 Apr 2010 17:56:52 GMT",
"version": "v1"
},
{
"created": "Mon, 3 Nov 2014 22:03:17 GMT",
"version": "v2"
}
] | 2014-11-05 | [
[
"Grib",
"A. A.",
""
],
[
"Pavlov",
"Yu. V.",
""
]
] | Scattering of particles in the gravitational field of rotating black holes is considered. It is shown that scattering energy of particles in the centre of mass system can obtain very large values not only for extremal black holes but also for nonextremal ones. Extraction of energy after the collision is investigated. I... |
1805.04506 | Avadhut Purohit | Avadhut Purohit | Combined variable field theory in FLRW cosmology | 12 pages, 5 figures | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This work aims to study consequences of \textit{combined variable field
theory} developed in [1] by analysing FLRW models of gravity. It shows $\Phi_{q
\rightarrow 0} \rightarrow \infty$ is the Big bang in combined variable field
theoretic settings. Nature of the Universe depends on the new parameter $k$
appearing in... | [
{
"created": "Fri, 11 May 2018 17:51:46 GMT",
"version": "v1"
}
] | 2018-05-14 | [
[
"Purohit",
"Avadhut",
""
]
] | This work aims to study consequences of \textit{combined variable field theory} developed in [1] by analysing FLRW models of gravity. It shows $\Phi_{q \rightarrow 0} \rightarrow \infty$ is the Big bang in combined variable field theoretic settings. Nature of the Universe depends on the new parameter $k$ appearing in t... |
2103.03611 | Mohsen Khodadi | Mohsen Khodadi | Black Hole Superradiance in the Presence of Lorentz Symmetry Violation | 18 pages, 4 figures, to appear in PRD | Phys. Rev. D 103, 064051 (2021) | 10.1103/PhysRevD.103.064051 | null | gr-qc astro-ph.HE hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we consider the massive scalar perturbation on the top of a
small spinning-like black hole in context of Einstein-bumblebee modified
gravity in order to probe the role of spontaneous Lorentz symmetry breaking on
the superradiance scattering and corresponding instability. We show that at the
low-frequenc... | [
{
"created": "Fri, 5 Mar 2021 11:29:16 GMT",
"version": "v1"
}
] | 2021-03-24 | [
[
"Khodadi",
"Mohsen",
""
]
] | In this paper we consider the massive scalar perturbation on the top of a small spinning-like black hole in context of Einstein-bumblebee modified gravity in order to probe the role of spontaneous Lorentz symmetry breaking on the superradiance scattering and corresponding instability. We show that at the low-frequency ... |
2305.08274 | Amodio Carleo | Amodio Carleo, Bilel Ben-Salem | The effect of environment in the timing of a pulsar orbiting SgrA* | null | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Pulsars are rapidly rotating neutron stars emitting intense electromagnetic
radiation that is detected on Earth as regular and precisely timed pulses. By
exploiting their extreme regularity and comparing the real arrival times with a
theoretical model (pulsar timing), it is possible to deduce many physical
informatio... | [
{
"created": "Sun, 14 May 2023 23:12:08 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Nov 2023 18:08:30 GMT",
"version": "v2"
}
] | 2023-11-20 | [
[
"Carleo",
"Amodio",
""
],
[
"Ben-Salem",
"Bilel",
""
]
] | Pulsars are rapidly rotating neutron stars emitting intense electromagnetic radiation that is detected on Earth as regular and precisely timed pulses. By exploiting their extreme regularity and comparing the real arrival times with a theoretical model (pulsar timing), it is possible to deduce many physical information,... |
gr-qc/0401035 | Olaf Dreyer | Olaf Dreyer | New Hints from General Relativity | This essay received an "honorable mention" in the 2003 Essay
Competition of the Gravity Research Foundation | Int.J.Mod.Phys. D12 (2003) 1763 | 10.1142/S0218271803004055 | null | gr-qc | null | The search for a quantum theory of gravity has followed two parallel but
different paths. One aims at arriving at the final theory starting from a
priori assumptions as to its form and building it from the ground up. The other
tries to infer as much as possible about the unknown theory from the existing
ones and use ... | [
{
"created": "Sat, 10 Jan 2004 02:56:29 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Dreyer",
"Olaf",
""
]
] | The search for a quantum theory of gravity has followed two parallel but different paths. One aims at arriving at the final theory starting from a priori assumptions as to its form and building it from the ground up. The other tries to infer as much as possible about the unknown theory from the existing ones and use ou... |
2011.02496 | Merced Montesinos | Merced Montesinos, Diego Gonzalez, Rodrigo Romero, Mariano Celada | Off-shell Noether currents and potentials for first-order general
relativity | Published version | Symmetry 13, 348 (2021) | 10.3390/sym13020348 | null | gr-qc hep-th math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We report off-shell Noether currents obtained from off-shell Noether
potentials for first-order general relativity described by $n$-dimensional
Palatini and Holst Lagrangians including the cosmological constant. These
off-shell currents and potentials are achieved by using the corresponding
Lagrangian and the off-she... | [
{
"created": "Wed, 4 Nov 2020 19:00:05 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Mar 2021 14:34:55 GMT",
"version": "v2"
}
] | 2021-03-05 | [
[
"Montesinos",
"Merced",
""
],
[
"Gonzalez",
"Diego",
""
],
[
"Romero",
"Rodrigo",
""
],
[
"Celada",
"Mariano",
""
]
] | We report off-shell Noether currents obtained from off-shell Noether potentials for first-order general relativity described by $n$-dimensional Palatini and Holst Lagrangians including the cosmological constant. These off-shell currents and potentials are achieved by using the corresponding Lagrangian and the off-shell... |
0909.4217 | Ian Hawke | S. T. Millmore and I. Hawke | Numerical simulations of interfaces in relativistic hydrodynamics | 21 pages, 17 figures | Class.Quant.Grav.27:015007,2010 | 10.1088/0264-9381/27/1/015007 | null | gr-qc physics.comp-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider models of relativistic matter containing sharp interfaces across
which the matter model changes. These models will be relevant for neutron stars
with crusts, phase transitions, or for viscous boundaries where the length
scale is too short to be modelled smoothly. In particular we look at numerical
techniq... | [
{
"created": "Wed, 23 Sep 2009 14:14:31 GMT",
"version": "v1"
}
] | 2010-01-06 | [
[
"Millmore",
"S. T.",
""
],
[
"Hawke",
"I.",
""
]
] | We consider models of relativistic matter containing sharp interfaces across which the matter model changes. These models will be relevant for neutron stars with crusts, phase transitions, or for viscous boundaries where the length scale is too short to be modelled smoothly. In particular we look at numerical technique... |
2009.12912 | Jaume Haro | Llibert Areste Salo, Jaume Haro | Quintessential Inflation for Exponential Type Potentials: Scaling and
Tracker Behavior | Version accepted for publication in EPJC | null | 10.1140/epjc/s10052-021-08906-2 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We will show that for exponential type potentials, which are used to depict
quintessential inflation, the solutions whose initial conditions take place
during the slow roll phase in order to describe correctly the inflationary
period do not belong to the basin of attraction of the scaling solution -a
solution of the ... | [
{
"created": "Sun, 27 Sep 2020 18:05:07 GMT",
"version": "v1"
},
{
"created": "Fri, 2 Oct 2020 06:54:18 GMT",
"version": "v2"
},
{
"created": "Thu, 28 Jan 2021 19:32:46 GMT",
"version": "v3"
}
] | 2021-02-24 | [
[
"Salo",
"Llibert Areste",
""
],
[
"Haro",
"Jaume",
""
]
] | We will show that for exponential type potentials, which are used to depict quintessential inflation, the solutions whose initial conditions take place during the slow roll phase in order to describe correctly the inflationary period do not belong to the basin of attraction of the scaling solution -a solution of the sc... |
gr-qc/0612110 | Michael Maziashvili | Michael Maziashvili | Space-time in light of Karolyhazy uncertainty relation | 5 pages, Two misprints are corrected | Int.J.Mod.Phys.D16:1531-1539,2007 | 10.1142/S0218271807010870 | null | gr-qc astro-ph hep-ph hep-th | null | General relativity and quantum mechanics provide a natural explanation for
the existence of dark energy with its observed value and predict its dynamics.
Dark energy proves to be necessary for the existence of space-time itself and
determines the rate of its stability.
| [
{
"created": "Mon, 18 Dec 2006 15:42:57 GMT",
"version": "v1"
},
{
"created": "Fri, 22 Dec 2006 10:41:00 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Maziashvili",
"Michael",
""
]
] | General relativity and quantum mechanics provide a natural explanation for the existence of dark energy with its observed value and predict its dynamics. Dark energy proves to be necessary for the existence of space-time itself and determines the rate of its stability. |
1807.03066 | Pietro Don\`a | Pietro Dona and Giorgio Sarno | Numerical methods for EPRL spin foam transition amplitudes and
Lorentzian recoupling theory | 20 pages, many figures. v2. Typos corrected. v3 minor corrections to
match published version. The library can be downloaded at
http://bitbucket.org/giorgiosarno/sl2cfoam-1.0/ | G. Gen Relativ Gravit (2018) 50: 127 | 10.1007/s10714-018-2452-7 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The intricated combinatorial structure and the non-compactness of the Lorentz
group have always made the computation of $SL(2,\mathbb{C})$ EPRL spin foam
transition amplitudes a very hard and resource demanding task. With
\texttt{sl2cfoam} we provide a C-coded library for the evaluation of the
Lorentzian EPRL vertex ... | [
{
"created": "Mon, 9 Jul 2018 12:15:50 GMT",
"version": "v1"
},
{
"created": "Mon, 16 Jul 2018 14:47:29 GMT",
"version": "v2"
},
{
"created": "Tue, 18 Sep 2018 22:45:32 GMT",
"version": "v3"
}
] | 2018-09-20 | [
[
"Dona",
"Pietro",
""
],
[
"Sarno",
"Giorgio",
""
]
] | The intricated combinatorial structure and the non-compactness of the Lorentz group have always made the computation of $SL(2,\mathbb{C})$ EPRL spin foam transition amplitudes a very hard and resource demanding task. With \texttt{sl2cfoam} we provide a C-coded library for the evaluation of the Lorentzian EPRL vertex am... |
2105.06384 | LSC P&P Committee | The LIGO Scientific Collaboration and the Virgo Collaboration: R.
Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, A. Adams, C. Adams,
R. X. Adhikari, V. B. Adya, C. Affeldt, D. Agarwal, M. Agathos, K. Agatsuma,
N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, K. M. Aleman, G.
Allen, A. Allocca,... | Search for lensing signatures in the gravitational-wave observations
from the first half of LIGO-Virgo's third observing run | 31 pages and 6 figures. Accepted by the Astrophysical Journal | null | 10.3847/1538-4357/ac23db | LIGO-P2000400 | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We search for signatures of gravitational lensing in the gravitational-wave
signals from compact binary coalescences detected by Advanced LIGO and Advanced
Virgo during O3a, the first half of their third observing run. We study: 1) the
expected rate of lensing at current detector sensitivity and the implications
of a... | [
{
"created": "Thu, 13 May 2021 16:12:18 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Jun 2021 13:31:38 GMT",
"version": "v2"
},
{
"created": "Tue, 30 Nov 2021 17:55:25 GMT",
"version": "v3"
}
] | 2022-04-13 | [
[
"The LIGO Scientific Collaboration",
"",
""
],
[
"the Virgo Collaboration",
"",
""
],
[
"Abbott",
"R.",
""
],
[
"Abbott",
"T. D.",
""
],
[
"Abraham",
"S.",
""
],
[
"Acernese",
"F.",
""
],
[
"Ackley",
"K.",
... | We search for signatures of gravitational lensing in the gravitational-wave signals from compact binary coalescences detected by Advanced LIGO and Advanced Virgo during O3a, the first half of their third observing run. We study: 1) the expected rate of lensing at current detector sensitivity and the implications of a n... |
1603.02676 | Alexei Zayats | Alexander B. Balakin, Jos\'e P. S. Lemos, Alexei E. Zayats | Magnetic black holes and monopoles in a nonminimal Einstein-Yang-Mills
theory with a cosmological constant: Exact solutions | 20 pages, 6 figures | Phys. Rev. D 93, 084004 (2016) | 10.1103/PhysRevD.93.084004 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Alternative theories of gravity and their solutions are of considerable
importance since at some fundamental level the world can reveal new features.
Indeed, it is suspected that the gravitational field might be nonminimally
coupled to the other fields at scales not yet probed, bringing into the
forefront nonminimall... | [
{
"created": "Tue, 8 Mar 2016 20:59:47 GMT",
"version": "v1"
},
{
"created": "Mon, 4 Apr 2016 20:41:18 GMT",
"version": "v2"
}
] | 2016-04-06 | [
[
"Balakin",
"Alexander B.",
""
],
[
"Lemos",
"José P. S.",
""
],
[
"Zayats",
"Alexei E.",
""
]
] | Alternative theories of gravity and their solutions are of considerable importance since at some fundamental level the world can reveal new features. Indeed, it is suspected that the gravitational field might be nonminimally coupled to the other fields at scales not yet probed, bringing into the forefront nonminimally ... |
2405.08670 | Michele Arzano | Francesco Alessio and Michele Arzano | Infrared gravity and a celestial obstruction to monogamy constraints | 7 pages, no figures. Slightly edited version of the essay selected
for a Honorable Mention in the 2024 Gravity Research Foundation Competition | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | We argue that gravitational interactions between particles require a
departure from the conventional picture of the quantum state of a multiparticle
system in terms of tensor products of one-particle states. This modification is
essential in order to accommodate the existence of a new boost-like
relativistic angular ... | [
{
"created": "Tue, 14 May 2024 14:52:39 GMT",
"version": "v1"
}
] | 2024-05-15 | [
[
"Alessio",
"Francesco",
""
],
[
"Arzano",
"Michele",
""
]
] | We argue that gravitational interactions between particles require a departure from the conventional picture of the quantum state of a multiparticle system in terms of tensor products of one-particle states. This modification is essential in order to accommodate the existence of a new boost-like relativistic angular mo... |
gr-qc/0012026 | Daniel Grumiller | D.Grumiller, D.Hofmann, W.Kummer | 2D gravity without test particles is pointless (Comment on
hep-th/0011136) | 5 pages, LaTex 3.14159, uses amsmath and amssymb | Mod.Phys.Lett. A16 (2001) 1597-1600 | 10.1142/S0217732301004935 | TUW--00--32 | gr-qc hep-th | null | Claims of a general Weyl invariance of an arbitrary 2D dilaton theory are
critically discussed.
| [
{
"created": "Wed, 6 Dec 2000 15:09:53 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Grumiller",
"D.",
""
],
[
"Hofmann",
"D.",
""
],
[
"Kummer",
"W.",
""
]
] | Claims of a general Weyl invariance of an arbitrary 2D dilaton theory are critically discussed. |
2205.15267 | Gabriel S\'anchez-P\'erez | Marc Mars and Gabriel S\'anchez-P\'erez | Double Null Data and the Characteristic Problem in General Relativity | The presentation of the proof of Theorem 7.15 has been improved.
Several typos has been amended. Some long computations has been moved to
appendices | Journal of Physics A: Mathematical and Theoretical, 2023 | 10.1088/1751-8121/acb098 | null | gr-qc math.AP math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | General hypersurfaces of any causal character can be studied abstractly using
the hypersurface data formalism. In the null case, we write down all tangential
components of the ambient Ricci tensor in terms of the abstract data. Using
this formalism, we formulate and solve in a completely abstract way the
characterist... | [
{
"created": "Mon, 30 May 2022 17:20:11 GMT",
"version": "v1"
},
{
"created": "Fri, 6 Jan 2023 13:31:05 GMT",
"version": "v2"
}
] | 2023-01-09 | [
[
"Mars",
"Marc",
""
],
[
"Sánchez-Pérez",
"Gabriel",
""
]
] | General hypersurfaces of any causal character can be studied abstractly using the hypersurface data formalism. In the null case, we write down all tangential components of the ambient Ricci tensor in terms of the abstract data. Using this formalism, we formulate and solve in a completely abstract way the characteristic... |
gr-qc/9911049 | Marcelo J. Reboucas | G.I. Gomero, M.J. Reboucas, A.F.F. Teixeira | A Topological Signature in Cosmic Topology | 27 pages, 7 figures, LaTeX2e. Inserted: clarifying details, a
connection with CCP method, new references. To appear in Class. Quantum Grav.
(2001) in the present form | Class.Quant.Grav. 18 (2001) 1885-1906 | 10.1088/0264-9381/18/10/306 | CBPF-NF-056/99 | gr-qc astro-ph hep-th | null | Two procedures for obtaining (extracting and constructing) the topological
signature of any multiply connected Robertson-Walker (RW) universe are
presented. It is shown through computer-aided simulations that both approaches
give rise to the same topological signature for a multiply connected flat RW
universe. The st... | [
{
"created": "Sat, 13 Nov 1999 17:24:00 GMT",
"version": "v1"
},
{
"created": "Fri, 30 Mar 2001 19:17:19 GMT",
"version": "v2"
}
] | 2009-10-31 | [
[
"Gomero",
"G. I.",
""
],
[
"Reboucas",
"M. J.",
""
],
[
"Teixeira",
"A. F. F.",
""
]
] | Two procedures for obtaining (extracting and constructing) the topological signature of any multiply connected Robertson-Walker (RW) universe are presented. It is shown through computer-aided simulations that both approaches give rise to the same topological signature for a multiply connected flat RW universe. The stre... |
gr-qc/0701087 | Christian Boehmer | C. G. Boehmer | The Einstein-Elko system -- Can dark matter drive inflation? | 24 pages | AnnalenPhys.16:325-341,2007 | 10.1002/andp.200610237 | null | gr-qc astro-ph hep-th | null | Recently, a spin one half matter field with mass dimension one was
discovered, called Elko spinors. The present work shows how to introduce these
fields into a curved spacetime by the standard covariantisation scheme. After
formulating the coupled Einstein-Elko field equations, the spacetime is assumed
to be homogene... | [
{
"created": "Tue, 16 Jan 2007 00:58:27 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Boehmer",
"C. G.",
""
]
] | Recently, a spin one half matter field with mass dimension one was discovered, called Elko spinors. The present work shows how to introduce these fields into a curved spacetime by the standard covariantisation scheme. After formulating the coupled Einstein-Elko field equations, the spacetime is assumed to be homogeneou... |
1005.3403 | Subenoy Chakraborty | Nairwita Mazumder, Subenoy Chakraborty | Validity of the Generalized Second Law of Thermodynamics of the Universe
Bounded by the Event Horizon in Holographic Dark Energy Model | 8 pages | Gen.Rel.Grav.42:813-820,2010 | 10.1007/s10714-009-0881-z | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this letter, we investigate the validity of the generalized second law of
thermodynamics of the universe bounded by the event horizon in the holographic
dark energy model. The universe is chosen to be homogeneous and isotropic and
the validity of the first law has been assumed here. The matter in the universe
is t... | [
{
"created": "Wed, 19 May 2010 10:22:30 GMT",
"version": "v1"
}
] | 2010-11-04 | [
[
"Mazumder",
"Nairwita",
""
],
[
"Chakraborty",
"Subenoy",
""
]
] | In this letter, we investigate the validity of the generalized second law of thermodynamics of the universe bounded by the event horizon in the holographic dark energy model. The universe is chosen to be homogeneous and isotropic and the validity of the first law has been assumed here. The matter in the universe is tak... |
1108.6325 | Alexis Larranaga PhD | Alexis Larranaga | A Rotating Charged Black Hole Solution in f(R) Gravity | 9 pages, no figures | Pramana Journal of Physics 78, 5. 697-704 (2012) | 10.1007/s12043-012-0278-5 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the context of f(R) theories of gravity, we address the problem of finding
a rotating charged black hole solution in the case of constant curvature. The
new metric is obtained by solving the field equations and we show that the
behavior of it is typical of a rotating charged source. In addition, we analyze
the the... | [
{
"created": "Wed, 31 Aug 2011 19:08:26 GMT",
"version": "v1"
}
] | 2015-05-30 | [
[
"Larranaga",
"Alexis",
""
]
] | In the context of f(R) theories of gravity, we address the problem of finding a rotating charged black hole solution in the case of constant curvature. The new metric is obtained by solving the field equations and we show that the behavior of it is typical of a rotating charged source. In addition, we analyze the therm... |
1605.09685 | Valentin Rudenko | V.V. Kulagin, S.I. Oreshkin, S.M. Popov, V.N. Rudenko, M.N. Skvortsov,
I.S. Yudin | Opto acoustical gravitational bar detector with cryogenic mirrors | 9 pages, 5 figures | null | 10.1134/S0202289316040113 | null | gr-qc physics.ins-det | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Enhancing of sensitivity of the opto-acoustical gravitational wave (GW)
antenna OGRAN installed in the underground facilities of Baksan Neutrino
Observatory is analyzed. Calculations are presented showing a sensitivity
improving on two orders of value after a cooling the solid body acoustical part
of the antenna to t... | [
{
"created": "Tue, 31 May 2016 15:57:20 GMT",
"version": "v1"
}
] | 2016-12-07 | [
[
"Kulagin",
"V. V.",
""
],
[
"Oreshkin",
"S. I.",
""
],
[
"Popov",
"S. M.",
""
],
[
"Rudenko",
"V. N.",
""
],
[
"Skvortsov",
"M. N.",
""
],
[
"Yudin",
"I. S.",
""
]
] | Enhancing of sensitivity of the opto-acoustical gravitational wave (GW) antenna OGRAN installed in the underground facilities of Baksan Neutrino Observatory is analyzed. Calculations are presented showing a sensitivity improving on two orders of value after a cooling the solid body acoustical part of the antenna to the... |
2001.11376 | Hernando Quevedo | Servando V. Serdio and Hernando Quevedo | Singularity theorems in Schwarzschild spacetimes | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a review of the two prominent singularity theorems due to Penrose
and Hawking, as well as their physical interpretation. Their usage is discussed
in detail for the Schwarzschild spacetime with positive and negative mass.
First, we present a detailed mathematical proof to formally guarantee the
existence of... | [
{
"created": "Thu, 30 Jan 2020 14:56:30 GMT",
"version": "v1"
}
] | 2020-01-31 | [
[
"Serdio",
"Servando V.",
""
],
[
"Quevedo",
"Hernando",
""
]
] | We present a review of the two prominent singularity theorems due to Penrose and Hawking, as well as their physical interpretation. Their usage is discussed in detail for the Schwarzschild spacetime with positive and negative mass. First, we present a detailed mathematical proof to formally guarantee the existence of a... |
2208.01992 | Diego Fern\'andez-Silvestre | Diego Fern\'andez-Silvestre, Michael R. R. Good, Eric V. Linder | Upon the horizon's verge: Thermal particle creation between and
approaching horizons | 10 pages, 4 figures | Class. Quantum Grav. 39 235008 (2022) | 10.1088/1361-6382/ac9d1b | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | Quantum particle creation from spacetime horizons, or accelerating boundaries
in the dynamical Casimir effect, can have an equilibrium, or thermal,
distribution. Using an accelerating boundary in flat spacetime (moving mirror),
we investigate the production of thermal energy flux despite non-equilibrium
accelerations... | [
{
"created": "Wed, 3 Aug 2022 11:38:03 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Nov 2022 09:30:36 GMT",
"version": "v2"
}
] | 2022-11-15 | [
[
"Fernández-Silvestre",
"Diego",
""
],
[
"Good",
"Michael R. R.",
""
],
[
"Linder",
"Eric V.",
""
]
] | Quantum particle creation from spacetime horizons, or accelerating boundaries in the dynamical Casimir effect, can have an equilibrium, or thermal, distribution. Using an accelerating boundary in flat spacetime (moving mirror), we investigate the production of thermal energy flux despite non-equilibrium accelerations, ... |
2207.13009 | Changfu Shi | Shuo Sun, Changfu Shi, Jian-dong Zhang and Jianwei Mei | Detecting the gravitational wave memory effect with TianQin | 14 pages, 9 figures | Phys. Rev. D 107, 044023 (2023) | 10.1103/PhysRevD.107.044023 | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | The gravitational wave memory effect is a prediction of general relativity.
The presence of memory effect in gravitational wave signals not only provides
the chance to test an important aspect of general relativity, but also
represents a potentially non-negligible contribution to the waveform for
certain gravitationa... | [
{
"created": "Tue, 26 Jul 2022 16:17:35 GMT",
"version": "v1"
},
{
"created": "Thu, 16 Feb 2023 03:47:39 GMT",
"version": "v2"
}
] | 2023-02-17 | [
[
"Sun",
"Shuo",
""
],
[
"Shi",
"Changfu",
""
],
[
"Zhang",
"Jian-dong",
""
],
[
"Mei",
"Jianwei",
""
]
] | The gravitational wave memory effect is a prediction of general relativity. The presence of memory effect in gravitational wave signals not only provides the chance to test an important aspect of general relativity, but also represents a potentially non-negligible contribution to the waveform for certain gravitational ... |
gr-qc/0205083 | Lars Andersson | Lars Andersson | Construction of hyperboloidal initial data | Talk given at the Workshop on the Conformal Structure of Space-Times,
T\"ubingen, April 2--4, 2001 | Lect.Notes Phys. 604 (2002) 183-194 | null | null | gr-qc | null | I describe the conformal method for constructing solutions of the
hyperboloidal constraint equations as well as the conditions needed on the free
data in order to have regularity up to boundary for the solutions to the
constraint equations. A brief discussion of the Einstein evolution equations in
the unphysical sett... | [
{
"created": "Sat, 18 May 2002 20:43:55 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Andersson",
"Lars",
""
]
] | I describe the conformal method for constructing solutions of the hyperboloidal constraint equations as well as the conditions needed on the free data in order to have regularity up to boundary for the solutions to the constraint equations. A brief discussion of the Einstein evolution equations in the unphysical settin... |
2205.01712 | Marco de Cesare | Marco de Cesare, Roberto Oliveri | Evolving black hole with scalar field accretion | 13 pages, 1 figure | Phys.Rev.D 106 (2022) 4, 044033 | 10.1103/PhysRevD.106.044033 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain approximate analytical solutions of the Einstein equations close to
the trapping horizon for a dynamical spherically symmetric black hole in the
presence of a minimally coupled self-interacting scalar field. This is made
possible by a new parametrization of the metric, in which the displacement from
the hor... | [
{
"created": "Tue, 3 May 2022 18:21:45 GMT",
"version": "v1"
},
{
"created": "Wed, 14 Sep 2022 11:42:14 GMT",
"version": "v2"
}
] | 2022-09-15 | [
[
"de Cesare",
"Marco",
""
],
[
"Oliveri",
"Roberto",
""
]
] | We obtain approximate analytical solutions of the Einstein equations close to the trapping horizon for a dynamical spherically symmetric black hole in the presence of a minimally coupled self-interacting scalar field. This is made possible by a new parametrization of the metric, in which the displacement from the horiz... |
1309.1857 | Ai WenYuan | Wen-Yuan Ai, Hua Chen, Xian-Ru Hu, Jian-Bo Deng | Generalized Holographic Equipartition for Friedmann-Robertson-Walker
Universes | removed the section of de Sitter universe and so tile changed, to be
published in Gen. Rel. Grav | Gen Relativ Gravit (2014) 46:1680 | 10.1007/s10714-014-1680-8 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The novel idea that spatial expansion of our universe can be regarded as the
consequence of the emergence of space was proposed by Padmanabhan. By using of
the basic law governing the emergence, which Padmanabhan called holographic
equipartition, he also arrives at the Friedmann equation in a flat universe.
When gene... | [
{
"created": "Sat, 7 Sep 2013 12:02:05 GMT",
"version": "v1"
},
{
"created": "Tue, 4 Mar 2014 11:11:43 GMT",
"version": "v2"
},
{
"created": "Fri, 7 Mar 2014 13:39:07 GMT",
"version": "v3"
}
] | 2014-04-17 | [
[
"Ai",
"Wen-Yuan",
""
],
[
"Chen",
"Hua",
""
],
[
"Hu",
"Xian-Ru",
""
],
[
"Deng",
"Jian-Bo",
""
]
] | The novel idea that spatial expansion of our universe can be regarded as the consequence of the emergence of space was proposed by Padmanabhan. By using of the basic law governing the emergence, which Padmanabhan called holographic equipartition, he also arrives at the Friedmann equation in a flat universe. When genera... |
2311.08822 | Hao Wang Hao Wang | Hao Wang, Yuan-Chuan Zou, Qing-Wen Wu, Yu Liu | Unveiling the Fingerprint of Eccentric Binary Black Hole Mergers | Submitted to PRL, comments are very welcome | null | null | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The orbital eccentricity plays a crucial role in shaping the dynamics of
binary black hole (BBH) mergers. Remarkably, our recent findings reveal a
universal oscillation in essential dynamic quantities: peak luminosity
$L_{\text{peak}}$, masses $M_f$, spins $\alpha_f$, and recoil velocity $V_f$ of
the final remnant bl... | [
{
"created": "Wed, 15 Nov 2023 09:51:39 GMT",
"version": "v1"
}
] | 2023-11-16 | [
[
"Wang",
"Hao",
""
],
[
"Zou",
"Yuan-Chuan",
""
],
[
"Wu",
"Qing-Wen",
""
],
[
"Liu",
"Yu",
""
]
] | The orbital eccentricity plays a crucial role in shaping the dynamics of binary black hole (BBH) mergers. Remarkably, our recent findings reveal a universal oscillation in essential dynamic quantities: peak luminosity $L_{\text{peak}}$, masses $M_f$, spins $\alpha_f$, and recoil velocity $V_f$ of the final remnant blac... |
gr-qc/0310002 | Steven Carlip | M. Anderson, S. Carlip, J. Ratcliffe, S. Surya, S. Tschantz | Peaks in the Hartle-Hawking Wave Function from Sums over Topologies | 16 pages,LaTeX, no figures; v2: some changes coming from revision of
a math reference: wave function peaks sharp but not infinite; v3: added
paragraph in intro on interpretation of wave function | Class.Quant.Grav.21:729-742,2004 | 10.1088/0264-9381/21/2/025 | UCD-2003-10 | gr-qc astro-ph hep-th | null | Recent developments in ``Einstein Dehn filling'' allow the construction of
infinitely many Einstein manifolds that have different topologies but are
geometrically close to each other. Using these results, we show that for many
spatial topologies, the Hartle-Hawking wave function for a spacetime with a
negative cosmol... | [
{
"created": "Wed, 1 Oct 2003 00:24:48 GMT",
"version": "v1"
},
{
"created": "Fri, 31 Oct 2003 21:22:21 GMT",
"version": "v2"
},
{
"created": "Wed, 19 Nov 2003 22:11:07 GMT",
"version": "v3"
}
] | 2010-04-28 | [
[
"Anderson",
"M.",
""
],
[
"Carlip",
"S.",
""
],
[
"Ratcliffe",
"J.",
""
],
[
"Surya",
"S.",
""
],
[
"Tschantz",
"S.",
""
]
] | Recent developments in ``Einstein Dehn filling'' allow the construction of infinitely many Einstein manifolds that have different topologies but are geometrically close to each other. Using these results, we show that for many spatial topologies, the Hartle-Hawking wave function for a spacetime with a negative cosmolog... |
1901.01596 | Iarley P. Lobo Dr | V. B. Bezerra, I. P. Lobo, H. F. Mota and C. R. Muniz | Landau Levels in the Presence of a Cosmic String in Rainbow Gravity | 21 pages, 6 figures. Accepted for publication in Annals of Physics | null | 10.1016/j.aop.2019.01.004 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we analyze the energy levels of a charged scalar particle
placed in the static cosmic string spacetime, under the action of a uniform
magnetic field parallel to the string, in the context of the semi-classical
approach of the rainbow gravity. Firstly, we focus on the non-relativistic
regime by solving t... | [
{
"created": "Sun, 6 Jan 2019 19:13:55 GMT",
"version": "v1"
}
] | 2019-01-08 | [
[
"Bezerra",
"V. B.",
""
],
[
"Lobo",
"I. P.",
""
],
[
"Mota",
"H. F.",
""
],
[
"Muniz",
"C. R.",
""
]
] | In this paper we analyze the energy levels of a charged scalar particle placed in the static cosmic string spacetime, under the action of a uniform magnetic field parallel to the string, in the context of the semi-classical approach of the rainbow gravity. Firstly, we focus on the non-relativistic regime by solving the... |
2404.18741 | Nikolaos Mavromatos | Nick E. Mavromatos, Panagiotis Dorlis, Sotirios-Neilos Vlachos | Torsion-induced axions in string theory, quantum gravity and the
cosmological tensions | 23 pages latex, several pdf figures incorporated, uses special macros
(PoS). Invited plenary talk by NEM in Corfu Summer Institute 2023 Workshop on
the Standard Model and beyond, August 27-September 7 2023 | null | null | KCL-PH-TH/2024-21 | gr-qc hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the role of torsion in string theory on inducing pseudoscalar
degrees of freedom (axions), which in turn couple to (gravitational)
Chern-Simons (CS) anomalous terms. Such interactions can induce inflation, of
running vacuum type, not requiring external inflaton fields, through
condensation of the anomalous... | [
{
"created": "Mon, 29 Apr 2024 14:42:32 GMT",
"version": "v1"
}
] | 2024-04-30 | [
[
"Mavromatos",
"Nick E.",
""
],
[
"Dorlis",
"Panagiotis",
""
],
[
"Vlachos",
"Sotirios-Neilos",
""
]
] | We discuss the role of torsion in string theory on inducing pseudoscalar degrees of freedom (axions), which in turn couple to (gravitational) Chern-Simons (CS) anomalous terms. Such interactions can induce inflation, of running vacuum type, not requiring external inflaton fields, through condensation of the anomalous t... |
2002.03362 | Ozay Gurtug | O.Gurtug and M.Mangut | Gravitational Lensing in a Model of Nonlinear Electrodynamics: The case
for electrically and magnetically charged compact objects | 11 pages 8 figures, final version got acceptance from Annalen der
Physik | Annalen der Physik, 2020 | 10.1002/andp.201900576 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper aims to investigate the astrophysical applicability of the
electrically and magnetically charged black hole solutions obtained in a model
of nonlinear electrodynamics proposed by Kruglov (Ann. Phys. Berlin 2017, 529,
170073). Theoretical calculations of the bending angles and gravitational
redshifts from t... | [
{
"created": "Sun, 9 Feb 2020 13:44:12 GMT",
"version": "v1"
}
] | 2020-02-18 | [
[
"Gurtug",
"O.",
""
],
[
"Mangut",
"M.",
""
]
] | This paper aims to investigate the astrophysical applicability of the electrically and magnetically charged black hole solutions obtained in a model of nonlinear electrodynamics proposed by Kruglov (Ann. Phys. Berlin 2017, 529, 170073). Theoretical calculations of the bending angles and gravitational redshifts from the... |
1606.00710 | Anatoly Shabad | Anatoly Shabad | A different interpretation of "Measuring propagation speed of Coulomb
fields" by R. de Sangro, G. Finocchiaro, P. Patteri, M. Piccolo, G. Pizzella | Comment on a work published in Eur. Phys. J. C, 3 pages | Eur. Phys. J. C (2016) 76:508 | 10.1140/epjc/s10052-016-4343-y | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We claim that the anti-relativistic statement in de Sangro et al., Eur. Phys.
J. C 75, 137 (2015) that the Coulomb field of a moving charge propagates
rigidly with it, cannot as a matter of fact be inferred from the measurements
reported in that reference. Registered is not the passing of the Coulomb disk,
but the ac... | [
{
"created": "Sun, 29 May 2016 19:51:31 GMT",
"version": "v1"
}
] | 2016-11-22 | [
[
"Shabad",
"Anatoly",
""
]
] | We claim that the anti-relativistic statement in de Sangro et al., Eur. Phys. J. C 75, 137 (2015) that the Coulomb field of a moving charge propagates rigidly with it, cannot as a matter of fact be inferred from the measurements reported in that reference. Registered is not the passing of the Coulomb disk, but the acce... |
1410.7733 | Luis Nunez A | Guillermo A. Gonzalez, Anamaria Navarro, Luis A. Nunez | Cracking isotropic and anisotropic relativistic spheres | 17 pages, 4 figures. New examples and corrected typos | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore the influence of density fluctuations on isotropic and anisotropic
configurations, extending the concept of cracking for general relativistic
fluid spheres. This concept, conceived to describe the behaviour of anisotropic
matter distributions just after its departure from equilibrium, could provide
some in... | [
{
"created": "Tue, 28 Oct 2014 19:00:48 GMT",
"version": "v1"
},
{
"created": "Tue, 15 Nov 2016 02:58:05 GMT",
"version": "v2"
}
] | 2016-11-16 | [
[
"Gonzalez",
"Guillermo A.",
""
],
[
"Navarro",
"Anamaria",
""
],
[
"Nunez",
"Luis A.",
""
]
] | We explore the influence of density fluctuations on isotropic and anisotropic configurations, extending the concept of cracking for general relativistic fluid spheres. This concept, conceived to describe the behaviour of anisotropic matter distributions just after its departure from equilibrium, could provide some insi... |
2003.10960 | Yu-Xiao Liu | Yu-Peng Zhang, Shao-Wen Wei, Yu-Xiao Liu | Spinning test particle in four-dimensional Einstein-Gauss-Bonnet Black
Hole | 10 pages, 5 figures | Universe 6 (2020) 8, 103 | 10.3390/universe6080103 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we investigate the motion of a classical spinning test
particle orbiting around a static spherically symmetric black hole in a novel
four-dimensional Einstein-Gauss-Bonnet gravity [D. Glavan and C. Lin, Phys.
Rev. Lett. 124, 081301 (2020)]. We find that the effective potential of a
spinning test partic... | [
{
"created": "Tue, 24 Mar 2020 16:38:04 GMT",
"version": "v1"
},
{
"created": "Tue, 7 Apr 2020 07:38:39 GMT",
"version": "v2"
},
{
"created": "Fri, 29 Apr 2022 03:47:47 GMT",
"version": "v3"
}
] | 2022-05-02 | [
[
"Zhang",
"Yu-Peng",
""
],
[
"Wei",
"Shao-Wen",
""
],
[
"Liu",
"Yu-Xiao",
""
]
] | In this paper, we investigate the motion of a classical spinning test particle orbiting around a static spherically symmetric black hole in a novel four-dimensional Einstein-Gauss-Bonnet gravity [D. Glavan and C. Lin, Phys. Rev. Lett. 124, 081301 (2020)]. We find that the effective potential of a spinning test particle... |
gr-qc/0010098 | Jerome Martin | Richard Kerner, Jerome Martin, Salvatore Mignemi and Jan-Willem van
Holten | Geodesic Deviation in Kaluza-Klein Theories | 5 pages, Revtex, 1 figure. To appear in Phys. Rev. D (Brief Report) | Phys.Rev. D63 (2001) 027502 | 10.1103/PhysRevD.63.027502 | null | gr-qc hep-th | null | We study in detail the equations of the geodesic deviation in
multidimensional theories of Kaluza-Klein type. We show that their
4-dimensional space-time projections are identical with the equations obtained
by direct variation of the usual geodesic equation in the presence of the
Lorentz force, provided that the fif... | [
{
"created": "Thu, 26 Oct 2000 12:24:44 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Kerner",
"Richard",
""
],
[
"Martin",
"Jerome",
""
],
[
"Mignemi",
"Salvatore",
""
],
[
"van Holten",
"Jan-Willem",
""
]
] | We study in detail the equations of the geodesic deviation in multidimensional theories of Kaluza-Klein type. We show that their 4-dimensional space-time projections are identical with the equations obtained by direct variation of the usual geodesic equation in the presence of the Lorentz force, provided that the fifth... |
2104.09339 | R. K. L. Lo | Rico K. L. Lo and Ignacio Magana Hernandez | Bayesian statistical framework for identifying strongly lensed
gravitational-wave signals | 26 pages, 14 figures | Phys. Rev. D 107, 123015 (2023) | 10.1103/PhysRevD.107.123015 | null | gr-qc astro-ph.IM | http://creativecommons.org/licenses/by-nc-sa/4.0/ | It is expected that gravitational waves, similar to electromagnetic waves,
can be gravitationally lensed by intervening matters, producing multiple
instances of the same signal arriving at different times from different
apparent luminosity distances with different phase shifts compared to the
un-lensed signal due to ... | [
{
"created": "Mon, 19 Apr 2021 14:25:01 GMT",
"version": "v1"
},
{
"created": "Tue, 13 Jun 2023 00:41:26 GMT",
"version": "v2"
}
] | 2023-06-14 | [
[
"Lo",
"Rico K. L.",
""
],
[
"Hernandez",
"Ignacio Magana",
""
]
] | It is expected that gravitational waves, similar to electromagnetic waves, can be gravitationally lensed by intervening matters, producing multiple instances of the same signal arriving at different times from different apparent luminosity distances with different phase shifts compared to the un-lensed signal due to le... |
2204.00968 | Salvatore Vitale | Salvatore Vitale, Sylvia Biscoveanu, Colm Talbot | The orientations of the binary black holes in GWTC-3 | 5 pages, 3 figures, a lot of fun | null | null | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is expected that the orbital planes of gravitational-wave (GW) sources are
isotropically distributed. However, both physical and technical factors, such
as alternate theories of gravity with birefringence, catalog contamination, and
search algorithm limitations, could result in inferring a non-isotropic
distributi... | [
{
"created": "Sun, 3 Apr 2022 01:38:48 GMT",
"version": "v1"
}
] | 2022-04-05 | [
[
"Vitale",
"Salvatore",
""
],
[
"Biscoveanu",
"Sylvia",
""
],
[
"Talbot",
"Colm",
""
]
] | It is expected that the orbital planes of gravitational-wave (GW) sources are isotropically distributed. However, both physical and technical factors, such as alternate theories of gravity with birefringence, catalog contamination, and search algorithm limitations, could result in inferring a non-isotropic distribution... |
gr-qc/0611052 | Raymond Burston | R. B. Burston and A. W. C. Lun | Covariant Schwarzschild perturbations I: Initial value formulation for
scalars of spin-weight -+ 2 | 17 pages. Submitted to Class. Quantum Grav | null | null | null | gr-qc | null | We consider full perturbations to a covariantly defined Schwarzschild
spacetime. By constructing complex quantities, we derive two decoupled,
covariant and gauge-invariant, wave-like equations for spin-weighted scalars.
These arise naturally from the Bianchi identities and comprise a covariant
representation of the B... | [
{
"created": "Wed, 8 Nov 2006 11:58:22 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Burston",
"R. B.",
""
],
[
"Lun",
"A. W. C.",
""
]
] | We consider full perturbations to a covariantly defined Schwarzschild spacetime. By constructing complex quantities, we derive two decoupled, covariant and gauge-invariant, wave-like equations for spin-weighted scalars. These arise naturally from the Bianchi identities and comprise a covariant representation of the Bar... |
1806.05719 | Mayer Humi | Mayer Humi and John Roumas | Structure of Polytropic Stars in General Relativity | This is a replacement and major revision of arXiv:1605.08650 | null | 10.1007/s10509-019-3608-y | null | gr-qc astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The inner structure of a star or a primordial interstellar cloud is a major
topic in classical and relativistic physics. The impact that General
Relativistic principles have on this structure has been the subject of many
research papers. In this paper we consider within the context of General
Relativity a prototype m... | [
{
"created": "Thu, 14 Jun 2018 19:56:11 GMT",
"version": "v1"
}
] | 2019-08-14 | [
[
"Humi",
"Mayer",
""
],
[
"Roumas",
"John",
""
]
] | The inner structure of a star or a primordial interstellar cloud is a major topic in classical and relativistic physics. The impact that General Relativistic principles have on this structure has been the subject of many research papers. In this paper we consider within the context of General Relativity a prototype mod... |
1806.01577 | Mohamed Ould El Hadj | Antoine Folacci and Mohamed Ould El Hadj | Multipolar gravitational waveforms and ringdowns generated during the
plunge from the innermost stable circular orbit into a Schwarzschild black
hole | arXiv admin note: substantial text overlap with arXiv:1805.11950 v2:
Includes a comparison with results obtained in Refs. [19] and [20] and
matches the version to appear in PRD | Phys. Rev. D 98, 084008 (2018) | 10.1103/PhysRevD.98.084008 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the gravitational radiation emitted by a massive point particle
plunging from slightly below the innermost stable circular orbit into a
Schwarzschild black hole. We consider both even- and odd-parity perturbations
and describe them using the two gauge-invariant master functions of Cunningham,
Price, and Monc... | [
{
"created": "Tue, 5 Jun 2018 09:32:00 GMT",
"version": "v1"
},
{
"created": "Thu, 27 Sep 2018 15:32:47 GMT",
"version": "v2"
}
] | 2018-10-08 | [
[
"Folacci",
"Antoine",
""
],
[
"Hadj",
"Mohamed Ould El",
""
]
] | We study the gravitational radiation emitted by a massive point particle plunging from slightly below the innermost stable circular orbit into a Schwarzschild black hole. We consider both even- and odd-parity perturbations and describe them using the two gauge-invariant master functions of Cunningham, Price, and Moncri... |
2402.02789 | Qiyuan Pan | Chengjia Chen, Qiyuan Pan and Jiliang Jing | Geometrically thick equilibrium tori around a Schwarzschild black hole
in swirling universes | 12 pages, 4 figures | null | null | null | gr-qc hep-th | http://creativecommons.org/licenses/by/4.0/ | We study geometrically thick non-self gravitating equilibrium tori orbiting a
Schwarzschild black hole immersed in swirling universes. This solution is
axially symmetric and non-asymptotically flat, and its north and south
hemispheres spin in opposite directions. Due to repulsive effects arising from
the swirl of the... | [
{
"created": "Mon, 5 Feb 2024 07:55:41 GMT",
"version": "v1"
}
] | 2024-02-06 | [
[
"Chen",
"Chengjia",
""
],
[
"Pan",
"Qiyuan",
""
],
[
"Jing",
"Jiliang",
""
]
] | We study geometrically thick non-self gravitating equilibrium tori orbiting a Schwarzschild black hole immersed in swirling universes. This solution is axially symmetric and non-asymptotically flat, and its north and south hemispheres spin in opposite directions. Due to repulsive effects arising from the swirl of the b... |
gr-qc/0208053 | Farhad Darabi | S. K. Moayedi, F. Darabi | Exact solutions of Dirac equation on a 2D gravitational background | 10 pages, title changed, content reduced, some references removed, To
be published in PLA | Phys.Lett.A322:173-178,2004 | 10.1016/j.physleta.2004.01.032 | null | gr-qc hep-th | null | We obtain classes of two dimensional static Lorentzian manifolds, which
through the supersymmetric formalism of quantum mechanics admit the exact
solvability of Dirac equation on these curved backgrounds. Specially in the
case of a modified supersymmetric harmonic oscillator the wave function and
energy spectrum of D... | [
{
"created": "Mon, 19 Aug 2002 06:25:43 GMT",
"version": "v1"
},
{
"created": "Wed, 21 Jan 2004 06:58:39 GMT",
"version": "v2"
}
] | 2014-11-17 | [
[
"Moayedi",
"S. K.",
""
],
[
"Darabi",
"F.",
""
]
] | We obtain classes of two dimensional static Lorentzian manifolds, which through the supersymmetric formalism of quantum mechanics admit the exact solvability of Dirac equation on these curved backgrounds. Specially in the case of a modified supersymmetric harmonic oscillator the wave function and energy spectrum of Dir... |
1605.08502 | Kai Lin | Jin Li, Kai Lin, Hao Wen and Wei-Liang Qian | Gravitational Quasinormal Modes of Regular Phantom Black Hole | null | Advances in High Energy Physics, Volume 2017 (2017), Article ID
5234214 | 10.1155/2017/5234214 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the gravitational quasi-normal modes (QNMs) for a type of
regular black hole (BH) known as phantom BH, which is a static self-gravitating
solution of a minimally coupled phantom scalar field with a potential. The
studies are carried out for three different spacetimes: asymptotically flat, de
Sitter (dS... | [
{
"created": "Fri, 27 May 2016 04:01:47 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Feb 2017 02:16:28 GMT",
"version": "v2"
}
] | 2017-02-20 | [
[
"Li",
"Jin",
""
],
[
"Lin",
"Kai",
""
],
[
"Wen",
"Hao",
""
],
[
"Qian",
"Wei-Liang",
""
]
] | We investigate the gravitational quasi-normal modes (QNMs) for a type of regular black hole (BH) known as phantom BH, which is a static self-gravitating solution of a minimally coupled phantom scalar field with a potential. The studies are carried out for three different spacetimes: asymptotically flat, de Sitter (dS),... |
1409.4278 | David W. Tian | David Wenjie Tian, Ivan Booth | Friedmann equations from nonequilibrium thermodynamics of the Universe:
A unified formulation for modified gravity | 33 pages, to appear in Physical Review D, with three more subsections
on negative horizon temperature, self-inconsistency of f(R,G) gravity, and
dynamical Chern-Simons gravity; new references added | Physical Review D 90, 104042 (2014) | 10.1103/PhysRevD.90.104042 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Inspired by the Wald-Kodama entropy $S=A/(4G_{\text{eff}})$ where $A$ is the
horizon area and $G_{\text{eff}}$ is the effective gravitational coupling
strength in modified gravity with field equation $R_{\mu\nu}-Rg_{\mu\nu}/2=$
$8\pi G_{\text{eff}} T_{\mu\nu}^{\text{(eff)}}$, we develop a unified and
compact formulat... | [
{
"created": "Mon, 15 Sep 2014 14:44:43 GMT",
"version": "v1"
},
{
"created": "Tue, 28 Oct 2014 21:26:39 GMT",
"version": "v2"
}
] | 2015-07-14 | [
[
"Tian",
"David Wenjie",
""
],
[
"Booth",
"Ivan",
""
]
] | Inspired by the Wald-Kodama entropy $S=A/(4G_{\text{eff}})$ where $A$ is the horizon area and $G_{\text{eff}}$ is the effective gravitational coupling strength in modified gravity with field equation $R_{\mu\nu}-Rg_{\mu\nu}/2=$ $8\pi G_{\text{eff}} T_{\mu\nu}^{\text{(eff)}}$, we develop a unified and compact formulatio... |
1109.0801 | Hiromi Saida | Hiromi Saida | Limit of Universality of Entropy-Area Law for Multi-Horizon Spacetimes | 44 pages, 4 figures. Invited as a chapter contribution to an edited
book, "Classical and Quantum Gravity: Theory, Analysis and Application",
2011, Nova Publ | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It may be a common understanding at present that, once event horizons are in
thermal equilibrium, the entropy-area law holds inevitably. However, no
rigorous verification is given to such a very strong universality of the law in
multi-horizon spacetimes. In this article, based on thermodynamically
consistent and rigo... | [
{
"created": "Mon, 5 Sep 2011 05:30:47 GMT",
"version": "v1"
}
] | 2011-09-06 | [
[
"Saida",
"Hiromi",
""
]
] | It may be a common understanding at present that, once event horizons are in thermal equilibrium, the entropy-area law holds inevitably. However, no rigorous verification is given to such a very strong universality of the law in multi-horizon spacetimes. In this article, based on thermodynamically consistent and rigoro... |
gr-qc/9603012 | BS Kay | Bernard S. Kay (York), Marek J. Radzikowski (York, Hamburg), Robert M.
Wald (Chicago) | Quantum Field Theory on Spacetimes with a Compactly Generated Cauchy
Horizon | 37 pages, LaTeX, uses latexsym and amsbsy, no figures; updated
version now published in Commun. Math. Phys.; no major revisions from
original version | Commun.Math.Phys.183:533-556,1997 | 10.1007/s002200050042 | null | gr-qc hep-th | null | We prove two theorems which concern difficulties in the formulation of the
quantum theory of a linear scalar field on a spacetime, (M,g_{ab}), with a
compactly generated Cauchy horizon. These theorems demonstrate the breakdown of
the theory at certain `base points' of the Cauchy horizon, which are defined as
`past te... | [
{
"created": "Sun, 10 Mar 1996 21:54:24 GMT",
"version": "v1"
},
{
"created": "Thu, 8 May 1997 16:25:04 GMT",
"version": "v2"
}
] | 2010-11-19 | [
[
"Kay",
"Bernard S.",
"",
"York"
],
[
"Radzikowski",
"Marek J.",
"",
"York, Hamburg"
],
[
"Wald",
"Robert M.",
"",
"Chicago"
]
] | We prove two theorems which concern difficulties in the formulation of the quantum theory of a linear scalar field on a spacetime, (M,g_{ab}), with a compactly generated Cauchy horizon. These theorems demonstrate the breakdown of the theory at certain `base points' of the Cauchy horizon, which are defined as `past term... |
1807.07407 | Mahouton J. Stephane Houndjo Dr | P. H. Logbo and M. J. S. Houndjo | Type IV singular bouncing cosmology from $f(T)$ Gravity | 9 pages, 3 figures. arXiv admin note: text overlap with
arXiv:1504.06866 by other authors | null | 10.1142/S0218271819501475 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate bouncing scenario in the modified $f(T)$ gravity, $T$ being
the torsion scalar. Attention is attached to the reconstruction of $f(T)$ able
to describe type IV singular bouncing evolution, where we adopt as assumption
that the bouncing and type IV singularity points coincide. In the context of
the recon... | [
{
"created": "Sat, 14 Jul 2018 16:51:58 GMT",
"version": "v1"
}
] | 2019-09-25 | [
[
"Logbo",
"P. H.",
""
],
[
"Houndjo",
"M. J. S.",
""
]
] | We investigate bouncing scenario in the modified $f(T)$ gravity, $T$ being the torsion scalar. Attention is attached to the reconstruction of $f(T)$ able to describe type IV singular bouncing evolution, where we adopt as assumption that the bouncing and type IV singularity points coincide. In the context of the reconst... |
1201.6164 | Scientific Information Service CERN | K. Enqvist (Univ. Helsinki and Helsinki Inst. Phys.) | Cosmological inflation | 9 pages, contribution to the 2010 European School of High-energy
Physics; 20 June - 3 July 2010, Raseborg, Finland | CERN Yellow Report CERN-2012-001, pp. 207-215 | null | null | gr-qc | http://creativecommons.org/licenses/by/3.0/ | The very basics of cosmological inflation are discussed. We derive the
equations of motion for the inflaton field, introduce the slow-roll parameters,
and present the computation of the inflationary perturbations and their
connection to the temperature fluctuations of the cosmic microwave background.
| [
{
"created": "Mon, 30 Jan 2012 10:51:17 GMT",
"version": "v1"
}
] | 2012-01-31 | [
[
"Enqvist",
"K.",
"",
"Univ. Helsinki and Helsinki Inst. Phys."
]
] | The very basics of cosmological inflation are discussed. We derive the equations of motion for the inflaton field, introduce the slow-roll parameters, and present the computation of the inflationary perturbations and their connection to the temperature fluctuations of the cosmic microwave background. |
1412.8404 | Carlos Hidalgo | Roberto A. Sussman, Juan Carlos Hidalgo, Peter K. S. Dunsby, Gabriel
German | On spherical dust fluctuations: the exact vs. the perturbative approach | V2: References added and typos corrected. Version accepted for
publication in PRD | null | 10.1103/PhysRevD.91.063512 | null | gr-qc astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We examine the relation between the dynamics of Lema\^{\i}tre-Tolman-Bondi
(LTB) dust models (with and without $\Lambda$) and the dynamics of dust
perturbations in two of the more familiar formalisms used in cosmology: the
metric based Cosmological Perturbation Theory (CPT) and the Covariant Gauge
Invariant (GIC) per... | [
{
"created": "Mon, 29 Dec 2014 17:43:19 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Feb 2015 22:00:17 GMT",
"version": "v2"
}
] | 2015-06-23 | [
[
"Sussman",
"Roberto A.",
""
],
[
"Hidalgo",
"Juan Carlos",
""
],
[
"Dunsby",
"Peter K. S.",
""
],
[
"German",
"Gabriel",
""
]
] | We examine the relation between the dynamics of Lema\^{\i}tre-Tolman-Bondi (LTB) dust models (with and without $\Lambda$) and the dynamics of dust perturbations in two of the more familiar formalisms used in cosmology: the metric based Cosmological Perturbation Theory (CPT) and the Covariant Gauge Invariant (GIC) pertu... |
gr-qc/0503075 | Luc Blanchet | Luc Blanchet, Guillaume Faye, Samaya Nissanke | On the structure of the post-Newtonian expansion in general relativity | 22 pages, to appear in Phys. Rev. D | Phys.Rev. D72 (2005) 044024 | 10.1103/PhysRevD.72.044024 | null | gr-qc | null | In the continuation of a preceding work, we derive a new expression for the
metric in the near zone of an isolated matter system in post-Newtonian
approximations of general relativity. The post-Newtonian metric, a solution of
the field equations in harmonic coordinates, is formally valid up to any order,
and is cast ... | [
{
"created": "Thu, 17 Mar 2005 16:40:15 GMT",
"version": "v1"
},
{
"created": "Fri, 15 Jul 2005 15:54:14 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Blanchet",
"Luc",
""
],
[
"Faye",
"Guillaume",
""
],
[
"Nissanke",
"Samaya",
""
]
] | In the continuation of a preceding work, we derive a new expression for the metric in the near zone of an isolated matter system in post-Newtonian approximations of general relativity. The post-Newtonian metric, a solution of the field equations in harmonic coordinates, is formally valid up to any order, and is cast in... |
2406.00265 | Zhi Luo | Zhi Luo, Jin Li, Ke-Jian He, Hao Yu | Shadows, Quasinormal Modes, and Optical Appearances of Black Holes in
Horndeski Theory | null | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This work describes the motion of photons in black hole (BH) spacetimes
within the framework of Horndeski theory. We focus on the shadows, quasinormal
modes (QNMs) and optical appearances of BHs surrounded by geometrically thin
accretion disks. The QNMs of BHs are calculated by the WKB method and the
eikonal limit, r... | [
{
"created": "Sat, 1 Jun 2024 02:07:20 GMT",
"version": "v1"
},
{
"created": "Mon, 22 Jul 2024 14:33:30 GMT",
"version": "v2"
}
] | 2024-07-23 | [
[
"Luo",
"Zhi",
""
],
[
"Li",
"Jin",
""
],
[
"He",
"Ke-Jian",
""
],
[
"Yu",
"Hao",
""
]
] | This work describes the motion of photons in black hole (BH) spacetimes within the framework of Horndeski theory. We focus on the shadows, quasinormal modes (QNMs) and optical appearances of BHs surrounded by geometrically thin accretion disks. The QNMs of BHs are calculated by the WKB method and the eikonal limit, res... |
1108.0081 | Donatella Fiorucci | Donatella Fiorucci, Orchidea Maria Lecian and Giovanni Montani | Non-analytical power law correction to the Einstein-Hilbert action:
gravitational wave propagation | 18 pages, 3 figures | null | 10.1142/S0217732314501788 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the features of the Minkowskian limit of a particular
non-analytical f(R) model, whose Taylor expansion in the weak field limit does
not hold, as far as gravitational waves (GWs) are concerned. We solve the
corresponding Einstein equations and we find an explicit expression of the
modified GWs as the sum o... | [
{
"created": "Sat, 30 Jul 2011 15:36:10 GMT",
"version": "v1"
}
] | 2014-10-24 | [
[
"Fiorucci",
"Donatella",
""
],
[
"Lecian",
"Orchidea Maria",
""
],
[
"Montani",
"Giovanni",
""
]
] | We analyze the features of the Minkowskian limit of a particular non-analytical f(R) model, whose Taylor expansion in the weak field limit does not hold, as far as gravitational waves (GWs) are concerned. We solve the corresponding Einstein equations and we find an explicit expression of the modified GWs as the sum of ... |
gr-qc/0512162 | Danielsson | Ulf H. Danielsson | Quantum gravitational proton decay at high temperature | 3 pages | null | null | null | gr-qc | null | One of the most important challenges of contemporary physics is to find
experimental signatures of quantum gravity. It is expected that quantum
gravitational effects lead to proton decay but on time scales way beyond what
is of any relevance to experiments. At non-zero temperatures there are reasons
to believe that t... | [
{
"created": "Thu, 29 Dec 2005 14:26:31 GMT",
"version": "v1"
}
] | 2007-05-23 | [
[
"Danielsson",
"Ulf H.",
""
]
] | One of the most important challenges of contemporary physics is to find experimental signatures of quantum gravity. It is expected that quantum gravitational effects lead to proton decay but on time scales way beyond what is of any relevance to experiments. At non-zero temperatures there are reasons to believe that the... |
gr-qc/0410018 | Ryuichi Fujita | Ryuichi Fujita and Hideyuki Tagoshi | New Numerical Methods to Evaluate Homogeneous Solutions of the Teukolsky
Equation | 36 pages,7 figures | Prog.Theor.Phys. 112 (2004) 415-450 | 10.1143/PTP.112.415 | null | gr-qc | null | We discuss a numerical method to compute the homogeneous solutions of the
Teukolsky equation which is the basic equation of the black hole perturbation
method. We use the formalism developed by Mano, Suzuki and Takasugi, in which
the homogeneous solutions of the radial Teukolsky equation are expressed in
terms of two... | [
{
"created": "Tue, 5 Oct 2004 09:16:12 GMT",
"version": "v1"
}
] | 2009-11-10 | [
[
"Fujita",
"Ryuichi",
""
],
[
"Tagoshi",
"Hideyuki",
""
]
] | We discuss a numerical method to compute the homogeneous solutions of the Teukolsky equation which is the basic equation of the black hole perturbation method. We use the formalism developed by Mano, Suzuki and Takasugi, in which the homogeneous solutions of the radial Teukolsky equation are expressed in terms of two k... |
1006.2227 | Ujjal Debnath | Writambhara Chakraborty and Ujjal Debnath | A New Variable Modified Chaplygin Gas Model Interacting with Scalar
Field | 7 pages, 3 figures | Grav.Cosmol.16:223-227,2010 | 10.1134/S0202289310030059 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this letter we present a new form of the well known Chaplygin gas model by
introducing inhomogeneity in the EOS. This model explains $\omega=-1$ crossing.
Also we have given a graphical representation of the model using $\{r,s\}$
parameters. We have also considered an interaction of this model with the
scalar fiel... | [
{
"created": "Fri, 11 Jun 2010 08:21:48 GMT",
"version": "v1"
}
] | 2014-11-21 | [
[
"Chakraborty",
"Writambhara",
""
],
[
"Debnath",
"Ujjal",
""
]
] | In this letter we present a new form of the well known Chaplygin gas model by introducing inhomogeneity in the EOS. This model explains $\omega=-1$ crossing. Also we have given a graphical representation of the model using $\{r,s\}$ parameters. We have also considered an interaction of this model with the scalar field ... |
2307.06999 | Piero Rettegno | Piero Rettegno, Geraint Pratten, Lucy Thomas, Patricia Schmidt,
Thibault Damour | Strong-field scattering of two spinning black holes: Numerical
Relativity versus post-Minkowskian gravity | 23 pages, 12 figures, 6 tables, 1 ancillary file | null | null | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Highly accurate models of the gravitational-wave signal from coalescing
compact binaries are built by completing analytical computations of the binary
dynamics with non-perturbative information from numerical relativity (NR)
simulations. In this paper we present four sets of NR simulations of equal-mass
black hole bi... | [
{
"created": "Thu, 13 Jul 2023 18:01:06 GMT",
"version": "v1"
},
{
"created": "Sun, 19 Nov 2023 20:47:26 GMT",
"version": "v2"
}
] | 2023-11-21 | [
[
"Rettegno",
"Piero",
""
],
[
"Pratten",
"Geraint",
""
],
[
"Thomas",
"Lucy",
""
],
[
"Schmidt",
"Patricia",
""
],
[
"Damour",
"Thibault",
""
]
] | Highly accurate models of the gravitational-wave signal from coalescing compact binaries are built by completing analytical computations of the binary dynamics with non-perturbative information from numerical relativity (NR) simulations. In this paper we present four sets of NR simulations of equal-mass black hole bina... |
1006.0138 | Luigi Ferraioli | Luigi Ferraioli, Gerhard Heinzel, Martin Hewitson, Mauro Hueller,
Anneke Monsky, Miquel Nofrarias and Stefano Vitale | Calibrating spectral estimation for the LISA Technology Package with
multichannel synthetic noise generation | Accepted for publication in Physical Review D (http://prd.aps.org/) | Phys.Rev.D82:042001,2010 | 10.1103/PhysRevD.82.042001 | null | gr-qc physics.data-an | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The scientific objectives of the Lisa Technology Package (LTP) experiment, on
board of the LISA Pathfinder mission, demand for an accurate calibration and
validation of the data analysis tools in advance of the mission launch. The
levels of confidence required on the mission outcomes can be reached only with
an inten... | [
{
"created": "Tue, 1 Jun 2010 14:20:08 GMT",
"version": "v1"
},
{
"created": "Tue, 8 Jun 2010 13:39:19 GMT",
"version": "v2"
},
{
"created": "Fri, 11 Jun 2010 15:54:03 GMT",
"version": "v3"
},
{
"created": "Thu, 15 Jul 2010 13:31:52 GMT",
"version": "v4"
}
] | 2014-11-21 | [
[
"Ferraioli",
"Luigi",
""
],
[
"Heinzel",
"Gerhard",
""
],
[
"Hewitson",
"Martin",
""
],
[
"Hueller",
"Mauro",
""
],
[
"Monsky",
"Anneke",
""
],
[
"Nofrarias",
"Miquel",
""
],
[
"Vitale",
"Stefano",
""
]
] | The scientific objectives of the Lisa Technology Package (LTP) experiment, on board of the LISA Pathfinder mission, demand for an accurate calibration and validation of the data analysis tools in advance of the mission launch. The levels of confidence required on the mission outcomes can be reached only with an intense... |
2304.04281 | Tommaso Favalli | Tommaso Favalli and Augusto Smerzi | Time dilation of quantum clocks in a Newtonian gravitational field | 8 pages, 2 figures | null | null | null | gr-qc quant-ph | http://creativecommons.org/licenses/by/4.0/ | We consider two non-relativistic quantum clocks interacting with a Newtonian
gravitational field produced by a spherical mass. In the framework of Page and
Wootters approach, we derive a time dilation for the time states of the clocks.
The delay is in agreement up to first order with the gravitational time
dilation o... | [
{
"created": "Sun, 9 Apr 2023 17:02:51 GMT",
"version": "v1"
},
{
"created": "Tue, 26 Sep 2023 10:42:01 GMT",
"version": "v2"
},
{
"created": "Sun, 26 Nov 2023 04:54:35 GMT",
"version": "v3"
},
{
"created": "Wed, 1 May 2024 19:46:34 GMT",
"version": "v4"
}
] | 2024-05-03 | [
[
"Favalli",
"Tommaso",
""
],
[
"Smerzi",
"Augusto",
""
]
] | We consider two non-relativistic quantum clocks interacting with a Newtonian gravitational field produced by a spherical mass. In the framework of Page and Wootters approach, we derive a time dilation for the time states of the clocks. The delay is in agreement up to first order with the gravitational time dilation obt... |
0712.3742 | Burkhard Kleihaus | Burkhard Kleihaus, Jutta Kunz, Meike List, Isabell Schaffer | Rotating Boson Stars and Q-Balls II: Negative Parity and Ergoregions | 20 pages, 17 figures | Phys.Rev.D77:064025,2008 | 10.1103/PhysRevD.77.064025 | null | gr-qc | null | We construct axially symmetric, rotating boson stars with positive and
negative parity. Their flat space limits represent spinning Q-balls. $Q$-balls
and boson stars exist only in a limited frequency range. The coupling to
gravity gives rise to a spiral-like frequency dependence of the mass and charge
of boson stars.... | [
{
"created": "Fri, 21 Dec 2007 16:28:56 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Kleihaus",
"Burkhard",
""
],
[
"Kunz",
"Jutta",
""
],
[
"List",
"Meike",
""
],
[
"Schaffer",
"Isabell",
""
]
] | We construct axially symmetric, rotating boson stars with positive and negative parity. Their flat space limits represent spinning Q-balls. $Q$-balls and boson stars exist only in a limited frequency range. The coupling to gravity gives rise to a spiral-like frequency dependence of the mass and charge of boson stars. W... |
1205.1168 | Burin Gumjudpai | Antonio De Felice (IF, Naresuan), Burin Gumjudpai (IF, Naresuan),
Sanjay Jhingan (CTP, Jamia Millia Islamia) | Cosmological constraints for an Eddington-Born-Infeld field | 8 pages, 4 figures | Physical Review D 86, 043525 (2012) | 10.1103/PhysRevD.86.043525 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the Eddington-Born-Infeld (EBI) model here without assuming any
cosmological constant. The EBI scalar field is supposed to play a role of both
dark matter and dark energy. Different eras in cosmology are reconstructed for
the model. A comparison is drawn with $\Lambda$CDM model using Supernova Ia,
WMAP7 a... | [
{
"created": "Sun, 6 May 2012 00:58:08 GMT",
"version": "v1"
},
{
"created": "Mon, 27 Aug 2012 10:03:11 GMT",
"version": "v2"
}
] | 2012-08-28 | [
[
"De Felice",
"Antonio",
"",
"IF, Naresuan"
],
[
"Gumjudpai",
"Burin",
"",
"IF, Naresuan"
],
[
"Jhingan",
"Sanjay",
"",
"CTP, Jamia Millia Islamia"
]
] | We consider the Eddington-Born-Infeld (EBI) model here without assuming any cosmological constant. The EBI scalar field is supposed to play a role of both dark matter and dark energy. Different eras in cosmology are reconstructed for the model. A comparison is drawn with $\Lambda$CDM model using Supernova Ia, WMAP7 and... |
1709.02133 | Mohammad Sami | Abhineet Agarwal, R. Myrzakulov, S. K. J. Pacif, M. Sami, Anzhong Wang | Cosmic acceleration sourced by modification of gravity without extra
degrees of freedom | 17 pages, 2 tables and 5 figures; minor clarifications added, to
appear in IJGMMP | null | null | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we investigate a scenario in which late time cosmic
acceleration might arise due to coupling between dark matter and baryonic
matter without resorting to dark energy or large scale modification of gravity
associated with extra degrees of freedom. The scenario can give rise to late
time acceleration in ... | [
{
"created": "Thu, 7 Sep 2017 08:26:34 GMT",
"version": "v1"
},
{
"created": "Mon, 17 Jun 2019 07:55:13 GMT",
"version": "v2"
}
] | 2019-06-18 | [
[
"Agarwal",
"Abhineet",
""
],
[
"Myrzakulov",
"R.",
""
],
[
"Pacif",
"S. K. J.",
""
],
[
"Sami",
"M.",
""
],
[
"Wang",
"Anzhong",
""
]
] | In this paper, we investigate a scenario in which late time cosmic acceleration might arise due to coupling between dark matter and baryonic matter without resorting to dark energy or large scale modification of gravity associated with extra degrees of freedom. The scenario can give rise to late time acceleration in Jo... |
gr-qc/0703054 | Matyas Vasuth | M\'aty\'as Vas\'uth, Bal\'azs Mik\'oczi, L\'aszl\'o \'A. Gergely | Orbital phase in inspiralling compact binaries | to appear in the Proceedings of the Eleventh Marcel Grossmann Meeting
2006, World Scientific, Singapore (2007) | null | 10.1142/9789812834300_0443 | null | gr-qc | null | We derive the rate of change of the mean motion up to the second
post-Newtonian order for inspiralling compact binaries with spin, mass
quadrupole and magnetic dipole moments on eccentric orbits. We give this result
in terms of orbital elements. We also present the related orbital phase for
circular orbits.
| [
{
"created": "Thu, 8 Mar 2007 14:14:26 GMT",
"version": "v1"
},
{
"created": "Fri, 9 Mar 2007 21:36:44 GMT",
"version": "v2"
}
] | 2016-11-15 | [
[
"Vasúth",
"Mátyás",
""
],
[
"Mikóczi",
"Balázs",
""
],
[
"Gergely",
"László Á.",
""
]
] | We derive the rate of change of the mean motion up to the second post-Newtonian order for inspiralling compact binaries with spin, mass quadrupole and magnetic dipole moments on eccentric orbits. We give this result in terms of orbital elements. We also present the related orbital phase for circular orbits. |
1303.6620 | Lorenzo Luis Salcedo | C. Garcia-Recio and L. L. Salcedo | The perturbative scalar massless propagator in Schwarzschild spacetime | 6 pages, 1 figuere | Class. Quantum Grav. 30 (2013) 097001 | 10.1088/0264-9381/30/9/097001 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A short derivation is given of the weak gravitational field approximation to
the scalar massless propagator in Schwarzschild spacetime obtained by Paszko
using the path-integral approach. The contribution from the direct coupling of
the quantum field to the scalar curvature is explictly included. The propagator
compl... | [
{
"created": "Tue, 26 Mar 2013 19:48:33 GMT",
"version": "v1"
}
] | 2013-04-22 | [
[
"Garcia-Recio",
"C.",
""
],
[
"Salcedo",
"L. L.",
""
]
] | A short derivation is given of the weak gravitational field approximation to the scalar massless propagator in Schwarzschild spacetime obtained by Paszko using the path-integral approach. The contribution from the direct coupling of the quantum field to the scalar curvature is explictly included. The propagator complie... |
2304.12823 | Adam Cie\'slik | Adam Cie\'slik, Patryk Mach | Timelike and null geodesics in the Schwarzschild space-time: Analytical
solutions | 10 pages, 0 figures | Acta Phys. Pol. B Proc. Suppl. 16, 6-A10 (2023) | 10.5506/APhysPolBSupp.16.6-A10 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The theory of Schwarzschild geodesics is revisited. Using a theorem due to
Weierstrass and Biermann, we derive concise formulas describing all timelike
and null trajectories in terms of Weierstrass elliptic functions. The
formulation given in this note uses an analogue of the so-called Mino time.
| [
{
"created": "Tue, 25 Apr 2023 13:50:10 GMT",
"version": "v1"
}
] | 2023-06-27 | [
[
"Cieślik",
"Adam",
""
],
[
"Mach",
"Patryk",
""
]
] | The theory of Schwarzschild geodesics is revisited. Using a theorem due to Weierstrass and Biermann, we derive concise formulas describing all timelike and null trajectories in terms of Weierstrass elliptic functions. The formulation given in this note uses an analogue of the so-called Mino time. |
1803.03283 | Gabriela B\'arcenas-Enr\'iquez | Gabriela B\'arcenas-Enr\'iquez, Celia Escamilla-Rivera and Miguel A.
Garcia-Aspeitia | Cosmological analysis of a DGP stable model with $H(z)$ observations a
revision | 6 pages, 3 figures, accepted for publication in RMF | null | null | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we will present a Dvali-Gabadadze-Porrati stable model in
order to perform an observational test using $H(z)$ data and radial BAO scale
in the galaxy distribution. In this vein, we study the tension between
constraints on the cosmological constant $\Lambda$ and the crossover scale
$r_c$, which is assoc... | [
{
"created": "Thu, 8 Mar 2018 19:24:32 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Jun 2018 22:08:33 GMT",
"version": "v2"
}
] | 2018-06-29 | [
[
"Bárcenas-Enríquez",
"Gabriela",
""
],
[
"Escamilla-Rivera",
"Celia",
""
],
[
"Garcia-Aspeitia",
"Miguel A.",
""
]
] | In this paper, we will present a Dvali-Gabadadze-Porrati stable model in order to perform an observational test using $H(z)$ data and radial BAO scale in the galaxy distribution. In this vein, we study the tension between constraints on the cosmological constant $\Lambda$ and the crossover scale $r_c$, which is associa... |
2005.06237 | Alexander Zhuk | Alvina Burgazli, Valerii Shulga, A.Emrah Y\"ukselci, Alexander Zhuk | Effect of peculiar velocities on the gravitational potential in
cosmological models with perfect fluids | 7 pages, 4 figures, references added, matches published version | Physics Letters B 809 (2020) 135761 | 10.1016/j.physletb.2020.135761 | null | gr-qc astro-ph.CO hep-ph hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a universe filled with perfect fluid with the constant equation
of state parameter $\omega$. In the theory of scalar perturbations, we study
the effect of peculiar velocities on the gravitational potential. For radiation
with $\omega=1/3$, we obtain the expression for the gravitational potential in
the in... | [
{
"created": "Wed, 13 May 2020 10:21:18 GMT",
"version": "v1"
},
{
"created": "Fri, 18 Sep 2020 16:10:52 GMT",
"version": "v2"
}
] | 2020-09-21 | [
[
"Burgazli",
"Alvina",
""
],
[
"Shulga",
"Valerii",
""
],
[
"Yükselci",
"A. Emrah",
""
],
[
"Zhuk",
"Alexander",
""
]
] | We consider a universe filled with perfect fluid with the constant equation of state parameter $\omega$. In the theory of scalar perturbations, we study the effect of peculiar velocities on the gravitational potential. For radiation with $\omega=1/3$, we obtain the expression for the gravitational potential in the inte... |
2307.09107 | Arick Shao | Arick Shao | Bulk-boundary correspondences and unique continuation in asymptotically
Anti-de Sitter spacetimes | To be published in "MATRIX Annals" | null | null | null | gr-qc hep-th math.AP math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article surveys the research presented by the author at the MATRIX
Institute workshop "Hyperbolic Differential Equations in Geometry and Physics"
in April 2022. The work is centered about establishing rigorous mathematical
statements toward the AdS/CFT correspondence in theoretical physics, in
particular in dyna... | [
{
"created": "Tue, 18 Jul 2023 09:56:51 GMT",
"version": "v1"
}
] | 2023-07-19 | [
[
"Shao",
"Arick",
""
]
] | This article surveys the research presented by the author at the MATRIX Institute workshop "Hyperbolic Differential Equations in Geometry and Physics" in April 2022. The work is centered about establishing rigorous mathematical statements toward the AdS/CFT correspondence in theoretical physics, in particular in dynami... |
1808.09765 | Andreas G. A. Pithis | Andreas G. A. Pithis and Johannes Th\"urigen | Phase transitions in group field theory: The Landau perspective | 17 pages, matches published version | Phys. Rev. D 98, 126006 (2018) | 10.1103/PhysRevD.98.126006 | KCL-PH-TH/2018-39 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In various approaches to quantum gravity continuum spacetime is expected to
emerge from discrete geometries through a phase transition. In group field
theory, various indications for such a transition have recently been found but
a complete understanding of such a phenomenon remains an open issue. In this
work, we in... | [
{
"created": "Wed, 29 Aug 2018 12:40:57 GMT",
"version": "v1"
},
{
"created": "Thu, 13 Dec 2018 17:59:57 GMT",
"version": "v2"
}
] | 2018-12-14 | [
[
"Pithis",
"Andreas G. A.",
""
],
[
"Thürigen",
"Johannes",
""
]
] | In various approaches to quantum gravity continuum spacetime is expected to emerge from discrete geometries through a phase transition. In group field theory, various indications for such a transition have recently been found but a complete understanding of such a phenomenon remains an open issue. In this work, we inve... |
2007.11023 | Mustapha Azreg-A\"inou | Mustapha Azreg-A\"inou | Dynamical and static solutions to $R=0$-scalar-tensor theory | 7 twocolumn pages | EPL, vol. 130 (2020) 60003 | 10.1209/0295-5075/130/60003 | null | gr-qc astro-ph.CO math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the most cosmologically interesting and relevant case of
scalar-tensor theory (STT) and derive new normal and phantom, dynamical and
static, solutions. We determine the Bianchi I Kasner exponents and show that
the dynamical solutions are heteroclinic orbits connecting two singularities.
Approaching the si... | [
{
"created": "Tue, 21 Jul 2020 18:15:24 GMT",
"version": "v1"
}
] | 2020-07-23 | [
[
"Azreg-Aïnou",
"Mustapha",
""
]
] | We consider the most cosmologically interesting and relevant case of scalar-tensor theory (STT) and derive new normal and phantom, dynamical and static, solutions. We determine the Bianchi I Kasner exponents and show that the dynamical solutions are heteroclinic orbits connecting two singularities. Approaching the sing... |
1906.08835 | Flavio Mercati | Flavio Mercati | Through the Big Bang in inflationary cosmology | 23 pages + 2-page appendix, 9 figures | null | 10.1088/1475-7516/2019/10/025 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Singularities in General Relativity are regions where the description of
spacetime in terms of a pseudo-Riemannian geometry breaks down. The theory
seems unable to predict the evolution of the physical degrees of freedom around
and beyond such regions. In a recent paper, the author and collaborators
challenged this v... | [
{
"created": "Thu, 20 Jun 2019 20:30:42 GMT",
"version": "v1"
}
] | 2019-10-16 | [
[
"Mercati",
"Flavio",
""
]
] | Singularities in General Relativity are regions where the description of spacetime in terms of a pseudo-Riemannian geometry breaks down. The theory seems unable to predict the evolution of the physical degrees of freedom around and beyond such regions. In a recent paper, the author and collaborators challenged this vie... |
1206.6306 | Jan {\AA}man | Jan E. Aman, Ingemar Bengtsson and Helgi F. Runarsson | What are extremal Kerr Killing vectors up to? | 12 pages, 3 figures | Class. Quantum Grav. 29 215017 (2012) | 10.1088/0264-9381/29/21/215017 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the extremal Kerr spacetime the horizon Killing vector field is null on a
timelike hypersurface crossing the horizon at a fixed latitude, and spacelike
on both sides of the horizon in the equatorial plane. We explain in some detail
how this behaviour is consistent with the existence of timelike Killing vectors
eve... | [
{
"created": "Wed, 27 Jun 2012 15:22:28 GMT",
"version": "v1"
}
] | 2013-03-20 | [
[
"Aman",
"Jan E.",
""
],
[
"Bengtsson",
"Ingemar",
""
],
[
"Runarsson",
"Helgi F.",
""
]
] | In the extremal Kerr spacetime the horizon Killing vector field is null on a timelike hypersurface crossing the horizon at a fixed latitude, and spacelike on both sides of the horizon in the equatorial plane. We explain in some detail how this behaviour is consistent with the existence of timelike Killing vectors every... |
1908.00875 | Francesco Marino | Francesco Marino | Massive phonons and gravitational dynamics in a photon-fluid model | Revised version: a few typos in formulas corrected | Phys. Rev. A 100, 063825 (2019) | 10.1103/PhysRevA.100.063825 | null | gr-qc physics.optics | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We theoretically investigate the excitation dynamics in a photon-fluid with
both local and nonlocal interactions. We show that the interplay between
locality and an infinite-range nonlocality gives rise to a gapped Bogoliubov
spectrum of elementary excitations which, at lower momenta, correspond to
massive particles ... | [
{
"created": "Fri, 2 Aug 2019 14:19:32 GMT",
"version": "v1"
},
{
"created": "Wed, 27 Nov 2019 22:53:11 GMT",
"version": "v2"
},
{
"created": "Tue, 9 Feb 2021 13:00:15 GMT",
"version": "v3"
}
] | 2021-02-10 | [
[
"Marino",
"Francesco",
""
]
] | We theoretically investigate the excitation dynamics in a photon-fluid with both local and nonlocal interactions. We show that the interplay between locality and an infinite-range nonlocality gives rise to a gapped Bogoliubov spectrum of elementary excitations which, at lower momenta, correspond to massive particles (p... |
2310.15018 | Francisco Lobo | Ricardo A. C. Cipriano, Tiberiu Harko, Francisco S. N. Lobo, Miguel A.
S. Pinto, Jo\~ao Lu\'is Rosa | Gravitationally induced matter creation in scalar-tensor
$f(R,T_{\mu\nu}T^{\mu\nu})$ gravity | 17 pages; 6 figures. V2: minor corrections; references added. V3: 20
pages, discussion and references added; matches published version | Physics of the Dark Universe 44 (2024) 101463 | 10.1016/j.dark.2024.101463 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work, we analyze the possibility of gravitationally induced matter
creation in the so-called Energy-Momentum-Squared gravity (EMSG), i.e.
$f(R,T_{\mu\nu}T^{\mu\nu})$ gravity, in its dynamically equivalent
scalar-tensor representation. Given the explicit nonminimal coupling between
matter and geometry in this ... | [
{
"created": "Mon, 23 Oct 2023 15:13:52 GMT",
"version": "v1"
},
{
"created": "Mon, 30 Oct 2023 15:37:09 GMT",
"version": "v2"
},
{
"created": "Thu, 14 Mar 2024 13:00:58 GMT",
"version": "v3"
}
] | 2024-03-15 | [
[
"Cipriano",
"Ricardo A. C.",
""
],
[
"Harko",
"Tiberiu",
""
],
[
"Lobo",
"Francisco S. N.",
""
],
[
"Pinto",
"Miguel A. S.",
""
],
[
"Rosa",
"João Luís",
""
]
] | In this work, we analyze the possibility of gravitationally induced matter creation in the so-called Energy-Momentum-Squared gravity (EMSG), i.e. $f(R,T_{\mu\nu}T^{\mu\nu})$ gravity, in its dynamically equivalent scalar-tensor representation. Given the explicit nonminimal coupling between matter and geometry in this th... |
1409.4648 | Malik Rakhmanov | Malik Rakhmanov | Fermi-normal, optical, and wave-synchronous coordinates for spacetime
with a plane gravitational wave | null | Class. Quantum Grav. 31 (2014) 085006 | 10.1088/0264-9381/31/8/085006 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Fermi normal coordinates provide a standardized way to describe the effects
of gravitation from the point of view of an inertial observer. These
coordinates have always been introduced via perturbation expansions and were
usually limited to distances much less than the characteristic length scale set
by the curvature... | [
{
"created": "Tue, 16 Sep 2014 14:09:33 GMT",
"version": "v1"
}
] | 2015-06-22 | [
[
"Rakhmanov",
"Malik",
""
]
] | Fermi normal coordinates provide a standardized way to describe the effects of gravitation from the point of view of an inertial observer. These coordinates have always been introduced via perturbation expansions and were usually limited to distances much less than the characteristic length scale set by the curvature o... |
0708.4048 | Yosef Zlochower | Carlos O. Lousto, Yosef Zlochower | Further insight into gravitational recoil | 13 pages, 12 figures, revtex 4 | Phys.Rev.D77:044028,2008 | 10.1103/PhysRevD.77.044028 | null | gr-qc astro-ph | null | We test the accuracy of our recently proposed empirical formula to model the
recoil velocity imparted to the merger remnant of spinning, unequal-mass
black-hole binaries. We study three families of black-hole binary
configurations, all with mass ratio q=3/8 (to maximize the unequal-mass
contribution to the kick) and ... | [
{
"created": "Thu, 30 Aug 2007 18:46:01 GMT",
"version": "v1"
},
{
"created": "Mon, 3 Mar 2008 16:06:38 GMT",
"version": "v2"
},
{
"created": "Thu, 13 Mar 2008 11:08:43 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Lousto",
"Carlos O.",
""
],
[
"Zlochower",
"Yosef",
""
]
] | We test the accuracy of our recently proposed empirical formula to model the recoil velocity imparted to the merger remnant of spinning, unequal-mass black-hole binaries. We study three families of black-hole binary configurations, all with mass ratio q=3/8 (to maximize the unequal-mass contribution to the kick) and sp... |
2108.12430 | Dylan Rankin | Alec Gunny, Dylan Rankin, Jeffrey Krupa, Muhammed Saleem, Tri Nguyen,
Michael Coughlin, Philip Harris, Erik Katsavounidis, Steven Timm, Burt
Holzman | Hardware-accelerated Inference for Real-Time Gravitational-Wave
Astronomy | 21 pages, 14 figures | null | null | null | gr-qc astro-ph.IM physics.comp-ph physics.data-an physics.ins-det | http://creativecommons.org/licenses/by/4.0/ | The field of transient astronomy has seen a revolution with the first
gravitational-wave detections and the arrival of multi-messenger observations
they enabled. Transformed by the first detection of binary black hole and
binary neutron star mergers, computational demands in gravitational-wave
astronomy are expected ... | [
{
"created": "Fri, 27 Aug 2021 18:00:00 GMT",
"version": "v1"
}
] | 2021-08-31 | [
[
"Gunny",
"Alec",
""
],
[
"Rankin",
"Dylan",
""
],
[
"Krupa",
"Jeffrey",
""
],
[
"Saleem",
"Muhammed",
""
],
[
"Nguyen",
"Tri",
""
],
[
"Coughlin",
"Michael",
""
],
[
"Harris",
"Philip",
""
],
[
"Kat... | The field of transient astronomy has seen a revolution with the first gravitational-wave detections and the arrival of multi-messenger observations they enabled. Transformed by the first detection of binary black hole and binary neutron star mergers, computational demands in gravitational-wave astronomy are expected to... |
2404.08026 | Hamed Hadi | H. Hadi, Amin Rezaei Akbarieh, David F. Mota | Gravitational wave pulse and memory effects for hairy Kiselev black hole
and its analogy with Bondi-Sachs formalism | 18 pages, 30 figures | 2024 Class. Quantum Grav | 10.1088/1361-6382/ad3caf | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | The investigation of non-vacuum cosmological backgrounds containing black
holes is greatly enhanced by the Kiselev solution. This solution plays a
crucial role in understanding the properties of the background and its
relationship with the features of the black hole. Consequently, the
gravitational memory effects at ... | [
{
"created": "Thu, 11 Apr 2024 12:48:00 GMT",
"version": "v1"
}
] | 2024-04-15 | [
[
"Hadi",
"H.",
""
],
[
"Akbarieh",
"Amin Rezaei",
""
],
[
"Mota",
"David F.",
""
]
] | The investigation of non-vacuum cosmological backgrounds containing black holes is greatly enhanced by the Kiselev solution. This solution plays a crucial role in understanding the properties of the background and its relationship with the features of the black hole. Consequently, the gravitational memory effects at la... |
1811.07204 | Peter K.F. Kuhfittig | Peter K.F. Kuhfittig | Connecting noncommutative geometry to f(R) modified gravity | 7 pages, no figures | New Horizons in Mathematical Physics, vol. 2, No. 4, pp. 62-66,
2018 | 10.22606/nhmp.2018.24002 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is shown in this note that a noncommutative-geometry background determines
the modified-gravity function $f(R)$ for modeling dark matter.
| [
{
"created": "Sat, 17 Nov 2018 18:17:55 GMT",
"version": "v1"
},
{
"created": "Thu, 7 Feb 2019 19:23:42 GMT",
"version": "v2"
},
{
"created": "Thu, 23 May 2019 14:14:14 GMT",
"version": "v3"
}
] | 2019-05-24 | [
[
"Kuhfittig",
"Peter K. F.",
""
]
] | It is shown in this note that a noncommutative-geometry background determines the modified-gravity function $f(R)$ for modeling dark matter. |
gr-qc/0404056 | Bernd Bruegmann | Marcus Ansorg, Bernd Bruegmann, Wolfgang Tichy | A single-domain spectral method for black hole puncture data | 13 pages, 6 figures; published version with one important change, see
Fig. 4 and the corresponding changes to the text | Phys.Rev.D70:064011,2004 | 10.1103/PhysRevD.70.064011 | CGPG-03/12-3 | gr-qc | null | We calculate puncture initial data corresponding to both single and binary
black hole solutions of the constraint equations by means of a pseudo-spectral
method applied in a single spatial domain. Introducing appropriate coordinates,
these methods exhibit rapid convergence of the conformal factor and lead to
highly a... | [
{
"created": "Tue, 13 Apr 2004 12:03:13 GMT",
"version": "v1"
},
{
"created": "Mon, 13 Sep 2004 14:29:43 GMT",
"version": "v2"
}
] | 2008-11-26 | [
[
"Ansorg",
"Marcus",
""
],
[
"Bruegmann",
"Bernd",
""
],
[
"Tichy",
"Wolfgang",
""
]
] | We calculate puncture initial data corresponding to both single and binary black hole solutions of the constraint equations by means of a pseudo-spectral method applied in a single spatial domain. Introducing appropriate coordinates, these methods exhibit rapid convergence of the conformal factor and lead to highly acc... |
0802.3180 | Daniel Gomez Vergel | Daniel G\'omez Vergel | Schrodinger quantization of linearly polarized Gowdy $S^1\times S^2$ and
$S^3$ models coupled to massless scalar fields | 18 pages. Final version to appear in Classical and Quantum Gravity | Class.Quant.Grav.25:175016,2008 | 10.1088/0264-9381/25/17/175016 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we will construct the Schrodinger representation for the
linearly polarized Gowdy $S^1\times S^2$ and $S^3$ models coupled to massless
scalar fields. Here the quantum states belong to a $L^2$-space for a suitable
quantum configuration space endowed with a Gaussian measure, whose support is
analyzed. Thi... | [
{
"created": "Thu, 21 Feb 2008 18:01:02 GMT",
"version": "v1"
},
{
"created": "Tue, 27 May 2008 14:27:46 GMT",
"version": "v2"
},
{
"created": "Wed, 23 Jul 2008 12:53:35 GMT",
"version": "v3"
}
] | 2008-11-26 | [
[
"Vergel",
"Daniel Gómez",
""
]
] | In this paper we will construct the Schrodinger representation for the linearly polarized Gowdy $S^1\times S^2$ and $S^3$ models coupled to massless scalar fields. Here the quantum states belong to a $L^2$-space for a suitable quantum configuration space endowed with a Gaussian measure, whose support is analyzed. This ... |
0806.4059 | Tushar Kanti Dey | Tushar Kanti Dey and Surajit Sen | Gravitational lensing by wormholes | 13 pages, 6 figures | Mod.Phys.Lett.A23:953-962,2008 | 10.1142/S0217732308025498 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have investigated the gravitational lensing by two wormholes, viz.,
Janis-Newman-Winnicour (JNW) wormhole and Ellis wormhole. The deflection angle
in the strong field limit is calculated and various lens parameters of two
wormholes are compared. It is shown that the JNW wormhole exhibits the
relativistic images, w... | [
{
"created": "Wed, 25 Jun 2008 09:48:17 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Dey",
"Tushar Kanti",
""
],
[
"Sen",
"Surajit",
""
]
] | We have investigated the gravitational lensing by two wormholes, viz., Janis-Newman-Winnicour (JNW) wormhole and Ellis wormhole. The deflection angle in the strong field limit is calculated and various lens parameters of two wormholes are compared. It is shown that the JNW wormhole exhibits the relativistic images, whi... |
1912.11451 | Yury F. Pirogov | Yury F. Pirogov | Quartet-metric gravity, scalar-graviton dark substance and vacuum energy
screening: extending GR vs. its WTDiff alternative | 18 pages | null | null | null | gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the frameworks of the effective field theory of metric supplemented by
some distinct dynamical coordinates parametrized, in turn, by a scalar quartet
-- the so-called quartet-metric gravity -- the extension of tensor gravity
through a massive scalar graviton in addition to the massless tensor one is
consistently e... | [
{
"created": "Tue, 24 Dec 2019 17:54:41 GMT",
"version": "v1"
}
] | 2019-12-25 | [
[
"Pirogov",
"Yury F.",
""
]
] | In the frameworks of the effective field theory of metric supplemented by some distinct dynamical coordinates parametrized, in turn, by a scalar quartet -- the so-called quartet-metric gravity -- the extension of tensor gravity through a massive scalar graviton in addition to the massless tensor one is consistently exp... |
gr-qc/0212079 | Sumati Surya | G.J. Galloway, S. Surya, E. Woolgar | Non-Existence of Black Holes in Certain $\Lambda<0$ Spacetimes | 17 pages, Latex. Typos corrected, minor changes to the text. Accepted
for publication in Classical and Quantum Gravity | Class.Quant.Grav. 20 (2003) 1635-1648 | 10.1088/0264-9381/20/9/303 | Alberta-Thy-19-02 | gr-qc hep-th | null | Assuming certain asymptotic conditions, we prove a general theorem on the
non-existence of static regular (i.e., nondegenerate) black holes in spacetimes
with a negative cosmological constant, given that the fundamental group of
space is infinite. We use this to rule out the existence of regular negative
mass AdS bla... | [
{
"created": "Thu, 19 Dec 2002 20:52:31 GMT",
"version": "v1"
},
{
"created": "Sat, 8 Mar 2003 00:46:00 GMT",
"version": "v2"
}
] | 2017-08-23 | [
[
"Galloway",
"G. J.",
""
],
[
"Surya",
"S.",
""
],
[
"Woolgar",
"E.",
""
]
] | Assuming certain asymptotic conditions, we prove a general theorem on the non-existence of static regular (i.e., nondegenerate) black holes in spacetimes with a negative cosmological constant, given that the fundamental group of space is infinite. We use this to rule out the existence of regular negative mass AdS black... |
2003.02374 | Zack Carson | Zack Carson and Kent Yagi | Probing beyond-Kerr spacetimes with inspiral-ringdown corrections to
gravitational waves | 18 pages, 4 figures; Updated to match published version | Phys. Rev. D 101, 084050 (2020) | 10.1103/PhysRevD.101.084050 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Gravitational waves from the explosive merger of distant black holes are
encoded with details regarding the complex extreme-gravity spacetime present at
their source. Famously described by the Kerr spacetime metric for rotating
black holes in general relativity, what if effects beyond this theory are
present? One way... | [
{
"created": "Wed, 4 Mar 2020 23:56:04 GMT",
"version": "v1"
},
{
"created": "Thu, 23 Apr 2020 23:28:52 GMT",
"version": "v2"
}
] | 2020-04-29 | [
[
"Carson",
"Zack",
""
],
[
"Yagi",
"Kent",
""
]
] | Gravitational waves from the explosive merger of distant black holes are encoded with details regarding the complex extreme-gravity spacetime present at their source. Famously described by the Kerr spacetime metric for rotating black holes in general relativity, what if effects beyond this theory are present? One way t... |
1707.01078 | Grasiele Batista Santos | E. Bittencourt, R. Klippert and G. B. Santos | Dynamical Wormhole Definitions Confronted | 14 pages, 21 figures | null | 10.1088/1361-6382/aace31 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Crude comparison between four alternative proposals for the very definition
of a wormhole is provided, all of which were intended to apply to the dynamical
cases. An interesting dynamical solution, based upon large scale magnetic
fields, is used for the comparisons. Such solution goes beyond the perfect
fluid approxi... | [
{
"created": "Tue, 4 Jul 2017 17:30:39 GMT",
"version": "v1"
}
] | 2018-07-25 | [
[
"Bittencourt",
"E.",
""
],
[
"Klippert",
"R.",
""
],
[
"Santos",
"G. B.",
""
]
] | Crude comparison between four alternative proposals for the very definition of a wormhole is provided, all of which were intended to apply to the dynamical cases. An interesting dynamical solution, based upon large scale magnetic fields, is used for the comparisons. Such solution goes beyond the perfect fluid approxima... |
1101.4913 | Gonzalo Olmo | Gonzalo J. Olmo | Non-singular Universes a la Palatini | 4 pages, no figures. Contribution to the Spanish Relativity Meeting
(ERE2010), 6-10 Sept. Granada, Spain | J.Phys.Conf.Ser.314:012054,2011 | 10.1088/1742-6596/314/1/012054 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It has recently been shown that f(R) theories formulated in the Palatini
variational formalism are able to avoid the big bang singularity yielding
instead a bouncing solution. The mechanism responsible for this behavior is
similar to that observed in the effective dynamics of loop quantum cosmology
and an f(R) theory... | [
{
"created": "Tue, 25 Jan 2011 20:07:36 GMT",
"version": "v1"
}
] | 2011-09-28 | [
[
"Olmo",
"Gonzalo J.",
""
]
] | It has recently been shown that f(R) theories formulated in the Palatini variational formalism are able to avoid the big bang singularity yielding instead a bouncing solution. The mechanism responsible for this behavior is similar to that observed in the effective dynamics of loop quantum cosmology and an f(R) theory e... |
gr-qc/0101003 | David Wiltshire | D.L. Wiltshire | An introduction to quantum cosmology | 60 pages, harvmac, 11 figures, epsf. These summer school lecture
notes have been available for 5 years; but are being placed on the archive to
make them more easily accessible. Published in "Cosmology: the Physics of the
Universe", eds B. Robson, N. Visvanathan and W.S. Woolcock (World Scientific,
Singapore, 19... | null | null | ADP-95-11/M28 | gr-qc | null | This is an introductory set of lecture notes on quantum cosmology, given in
1995 to an audience with interests ranging from astronomy to particle physics.
Topics covered: 1. Introduction: 1.1 Quantum cosmology and quantum gravity; 1.2
A brief history of quantum cosmology. 2. Hamiltonian formulation of general
relativ... | [
{
"created": "Sat, 30 Dec 2000 07:25:47 GMT",
"version": "v1"
},
{
"created": "Wed, 3 Sep 2003 07:38:56 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Wiltshire",
"D. L.",
""
]
] | This is an introductory set of lecture notes on quantum cosmology, given in 1995 to an audience with interests ranging from astronomy to particle physics. Topics covered: 1. Introduction: 1.1 Quantum cosmology and quantum gravity; 1.2 A brief history of quantum cosmology. 2. Hamiltonian formulation of general relativit... |
2406.05767 | Vaidik A Sharma | Vaidik A Sharma | Integrating Quantum Algorithms with Gravitational-Wave Metrology for
Enhanced Signal Detection | null | International Journal of Innovative Science and Research
Technology(IJISRT) Volume 9 - 2024, Issue 5 - May | 10.38124/ijisrt/IJISRT24MAY1808 | null | gr-qc | http://creativecommons.org/licenses/by/4.0/ | This study explores the integration of quantum algorithms, specifically
Grover's algorithm, with quantum metrology to enhance the efficiency and
sensitivity of gravitational-wave detection. By combining quantum matched
filtering with precise parameter estimation techniques, the research aims to
optimize sensor networ... | [
{
"created": "Sun, 9 Jun 2024 12:46:44 GMT",
"version": "v1"
}
] | 2024-06-13 | [
[
"Sharma",
"Vaidik A",
""
]
] | This study explores the integration of quantum algorithms, specifically Grover's algorithm, with quantum metrology to enhance the efficiency and sensitivity of gravitational-wave detection. By combining quantum matched filtering with precise parameter estimation techniques, the research aims to optimize sensor networks... |
gr-qc/0607122 | Ramin G. Daghigh | R. G. Daghigh, J. Gegenberg, G. Kunstatter | A Partially Gauged Fixed Hamiltonian for Scalar Field Collapse | 13 pages | Class.Quant.Grav.24:2099-2107,2007 | 10.1088/0264-9381/24/8/010 | null | gr-qc | null | We derive a partially gauge fixed Hamiltonian for black hole formation via
real scalar field collapse. The class of models considered includes many
theories of physical interest, including spherically symmetric black holes in
$D$ spacetime dimensions. The boundary and gauge fixing conditions are chosen
to be consiste... | [
{
"created": "Wed, 26 Jul 2006 18:34:52 GMT",
"version": "v1"
},
{
"created": "Thu, 9 Aug 2007 21:03:51 GMT",
"version": "v2"
}
] | 2009-11-11 | [
[
"Daghigh",
"R. G.",
""
],
[
"Gegenberg",
"J.",
""
],
[
"Kunstatter",
"G.",
""
]
] | We derive a partially gauge fixed Hamiltonian for black hole formation via real scalar field collapse. The class of models considered includes many theories of physical interest, including spherically symmetric black holes in $D$ spacetime dimensions. The boundary and gauge fixing conditions are chosen to be consistent... |
gr-qc/0008058 | Scott A. Hughes | Scott A. Hughes | Gravitational waves from extreme mass ratio inspirals: Challenges in
mapping the spacetime of massive, compact objects | 6 pages, 2 figures. To appear (modulo refereeing) in the Proceedings
of the 3rd International LISA Symposium | Class.Quant.Grav. 18 (2001) 4067-4074 | 10.1088/0264-9381/18/19/314 | null | gr-qc astro-ph | null | In its final year of inspiral, a stellar mass ($1 - 10 M_\odot$) body orbits
a massive ($10^5 - 10^7 M_\odot$) compact object about $10^5$ times, spiralling
from several Schwarzschild radii to the last stable orbit. These orbits are
deep in the massive object's strong field, so the gravitational waves that they
produ... | [
{
"created": "Wed, 23 Aug 2000 21:20:46 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Hughes",
"Scott A.",
""
]
] | In its final year of inspiral, a stellar mass ($1 - 10 M_\odot$) body orbits a massive ($10^5 - 10^7 M_\odot$) compact object about $10^5$ times, spiralling from several Schwarzschild radii to the last stable orbit. These orbits are deep in the massive object's strong field, so the gravitational waves that they produce... |
gr-qc/0602048 | M. D. Maia | M. D. Maia | The Extended ADS/CFT Correspondence | 3 pages, Revtex4, no figures | Braz.J.Phys.35:1142-1144,2005 | 10.1590/S0103-97332005000700037 | null | gr-qc | null | The correspondence between conformal covariant fields in Minkowski's
space-time and isometric fields in the five dimensional anti-deSitter
space-time is extended to a six-dimensional bulk space and its regular
sub-manifolds, so as to include the analysis of evaporating Schwarzschild's
black holes without loss of quan... | [
{
"created": "Mon, 13 Feb 2006 18:51:26 GMT",
"version": "v1"
}
] | 2015-06-25 | [
[
"Maia",
"M. D.",
""
]
] | The correspondence between conformal covariant fields in Minkowski's space-time and isometric fields in the five dimensional anti-deSitter space-time is extended to a six-dimensional bulk space and its regular sub-manifolds, so as to include the analysis of evaporating Schwarzschild's black holes without loss of quantu... |
2405.20442 | Ernesto Contreras | M. Carrasco, N. M. Santos and E. Contreras | Spontaneous scalarization in Einstein--power--Maxwell--scalar models | null | Physics of the Dark Universe, Volume 45, 2024, 101529, ISSN
2212-6864 | 10.1016/j.dark.2024.101529. | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the spontaneous scalarization of charged black holes in Einstein's
gravity minimally coupled to power--Maxwell electrodynamics which, in turn, is
non--minimally coupled to a real scalar field. We point out the existence of a
specific power for which the scalarized solution is well-behaved, and
entropically p... | [
{
"created": "Thu, 30 May 2024 19:38:37 GMT",
"version": "v1"
}
] | 2024-06-03 | [
[
"Carrasco",
"M.",
""
],
[
"Santos",
"N. M.",
""
],
[
"Contreras",
"E.",
""
]
] | We study the spontaneous scalarization of charged black holes in Einstein's gravity minimally coupled to power--Maxwell electrodynamics which, in turn, is non--minimally coupled to a real scalar field. We point out the existence of a specific power for which the scalarized solution is well-behaved, and entropically pre... |
1108.6059 | Steffen Gielen | Steffen Gielen | 2-point functions in quantum cosmology | 4 pages, based on a talk given at Loops '11, Madrid, to appear in
Journal of Physics: Conference Series (JPCS) | J. Phys.: Conf. Ser. 360 (2012) 012029 | 10.1088/1742-6596/360/1/012029 | AEI-2011-085 | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We discuss the path-integral formulation of quantum cosmology with a massless
scalar field as a sum-over-histories, with particular reference to loop quantum
cosmology. Exploiting the analogy with the relativistic particle, we give a
complete overview of the possible two-point functions, deriving vertex
expansions an... | [
{
"created": "Tue, 30 Aug 2011 20:00:03 GMT",
"version": "v1"
}
] | 2012-06-05 | [
[
"Gielen",
"Steffen",
""
]
] | We discuss the path-integral formulation of quantum cosmology with a massless scalar field as a sum-over-histories, with particular reference to loop quantum cosmology. Exploiting the analogy with the relativistic particle, we give a complete overview of the possible two-point functions, deriving vertex expansions and ... |
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