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of 2 601
pro vyhledávání: '"P. Papapetrou"'
We consider a spinning test particle around a rotating black hole and compare the Mathisson-Papapetrou-Dixon (MPD) formalism under the Tulczyjew-Dixon spin supplementary condition to the test-mass limit of the effective-one-body (EOB) Hamiltonian of
Externí odkaz:
http://arxiv.org/abs/2412.16077
Publikováno v:
JHEP 10 (2024) 030
We consider the dimensional reduction to two dimensions of certain gravitational theories in $D \geq 4$ dimensions at the two-derivative level. It is known that the resulting field equations describe an integrable system in two dimensions which can a
Externí odkaz:
http://arxiv.org/abs/2407.14392
Autor:
Albacete, Eduardo, Richartz, Maurício
Publikováno v:
Universe 2024, 10, 62
Tidal disruption events occur when astrophysical objects are destroyed by black holes due to strong tidal force effects. Tidal forces have been studied in a variety of black hole spacetimes, including Reissner-Nordstr\"om and Kerr spacetimes. Despite
Externí odkaz:
http://arxiv.org/abs/2402.01634
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 10, Pp 1-59 (2024)
Abstract We consider the dimensional reduction to two dimensions of certain gravitational theories in D ≥ 4 dimensions at the two-derivative level. It is known that the resulting field equations describe an integrable system in two dimensions which
Externí odkaz:
https://doaj.org/article/2129e2c6330f4fa285ac3d7a40db40d6
Autor:
Maier, Rodrigo
Publikováno v:
Phys. Scr. 99 035016 (2024)
In this paper we examine the dynamics of particles subjected to test Papapetrou fields of vacuum spacetimes. The staring point of our analysis is based on fundamental electrodynamics which emerge from spacetime isometries of a Kerr and Schwarzschild
Externí odkaz:
http://arxiv.org/abs/2309.08496
Autor:
Dietrich, Gautier
In this short note, we compute the conformal stereographic projection on the standard metric of a sphere quotient. The result is a Majumdar-Papapetrou metric, which might be useful.
Externí odkaz:
http://arxiv.org/abs/2303.10274
Akademický článek
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Akademický článek
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Autor:
Marvan, Michal
Publikováno v:
J. Geom. Phys. 190 (2023) 104878
Addressing a long-standing problem, we show that every van Stockum dust can be matched to a 1-parametric family of non-static Papapetrou vacuum metrics, and the converse. The boundary, if existing, is determined by vanishing of certain first-order in
Externí odkaz:
http://arxiv.org/abs/2207.04740
Autor:
Ootsuka, Takayoshi, Yahagi, Ryoko
We derive two generalizations of Mathisson-Papapetrou-Tulczyjew-Dixon equations from Casalbuoni-Brink-Schwarz type pseudoclassical Lagrangians of Majorana spinors on a Riemann-Cartan spacetime. One has a "color" freedom, which makes the equations of
Externí odkaz:
http://arxiv.org/abs/2204.11430