Zobrazeno 1 - 10
of 19
pro vyhledávání: '"R G McLenaghan"'
Publikováno v:
Journal of Mathematical Physics. 43:492-507
We study the set CZ of invariants [Zakhary and Carminati, J. Math. Phys. 42, 1474 (2001)] for the class of space–times whose Ricci tensors possess a null eigenvector. We show that all cases are maximally backsolvable, in terms of sets of invariants
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ce75884c93985b6e77848deca76b295
https://doi.org/10.1063/1.1418427
https://doi.org/10.1063/1.1418427
Autor:
R G McLenaghan, N Van den Bergh
Publikováno v:
Classical and Quantum Gravity. 10:2179-2185
Spacetimes admitting non-null valence two Killing spinors are discussed. An explicit example of such a spacetime is given which shows that, contrary to claims appearing in the literature, not all of these spacetimes have been listed exhaustively. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e1b0f2bb120bc7aa1d950beef481eb9d
https://doi.org/10.1088/0264-9381/10/10/025
https://doi.org/10.1088/0264-9381/10/10/025
Autor:
R. G. McLenaghan, J. Carminati
Publikováno v:
Gravitation, Geometry and Relativistic Physics ISBN: 3540138811
It is shown that every Petrov type N space-time on which the conformally invariant scalar wave equation satisfies Huygens' principle is conformally related to a special complex recurrent space-time.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac1d914dc45c2503f287859e9bc94577
https://doi.org/10.1007/bfb0012586
https://doi.org/10.1007/bfb0012586
Publikováno v:
Symmetry and Perturbation Theory.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::944353464da0607b4f582b05276f25d1
https://doi.org/10.1142/9789812702142_0016
https://doi.org/10.1142/9789812702142_0016
Publikováno v:
Symmetry and Perturbation Theory.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c431afcf6aa22b9a7b0ae9fdb6aeb8b4
https://doi.org/10.1142/9789812795403_0017
https://doi.org/10.1142/9789812795403_0017
Publikováno v:
Recent Developments in General Relativity, Genoa 2000 ISBN: 9788847001626
With the assistance of the computer algebra system MAPLE’s NPspinor package, two propositions are proved regarding the validity of Huygens’ principle for the non-self- adjoint scalar wave equation on a Petrov type D spacetime. A decom-position of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a922b2b546c771914a47d13389df3ef
https://doi.org/10.1007/978-88-470-2101-3_11
https://doi.org/10.1007/978-88-470-2101-3_11
Publikováno v:
ISSAC
Thr design of a new algorithm for the simplification of expressions which are polynomial in the Riemann tensor [11] and its covariant derivatives is described. The simplification of such indicial expressions is complex and should be based on nondeter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::beb560a4b3bdb928e6eccf8819a1541c
https://doi.org/10.1145/258726.258759
https://doi.org/10.1145/258726.258759
Autor:
R. B. Mann, R. G. McLenaghan
Publikováno v:
General Relativity and Relativistic Astrophysics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50be67e7032bdf1e8fdc2d46b9f80963
https://doi.org/10.1142/9789814533782
https://doi.org/10.1142/9789814533782
Autor:
R. G. McLenaghan, N. Kamran
Publikováno v:
Journal of Mathematical Physics. 25:1019-1027
We show that there exist a coordinate system and null tetrad for the space‐times admitting a two‐parameter abelian orthogonally transitive isometry group and a pair of shearfree geodesic null congruences in which the neutrino equation is solvable
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e0d92ce9919209e6468c282645c8da0
https://doi.org/10.1063/1.526269
https://doi.org/10.1063/1.526269