Results 21 to 27 of about 101,941 (27)

QFT on homothetic Killing twist deformed curved spacetimes

, 2011
We study the quantum field theory (QFT) of a free, real, massless and curvature coupled scalar field on self-similar symmetric spacetimes, which are deformed by an abelian Drinfel'd twist constructed from a Killing and a homothetic Killing vector field ...
A.P. Balachandran, Alexander Schenkel, C.N. Yang, D. Bahns, D.M. Eardley, H. Araki, H.J. Borchers, J. Zahn, K. Pohlmeyer, M. Gerstenhaber, N. Reshetikhin, P. Aschieri, P. Aschieri, P. Aschieri, P. Aschieri, S. Waldmann, T. Ohl   +16 more
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Null Killing Vector Dimensional Reduction and Galilean Geometrodynamics

, 1994
The solutions of Einstein's equations admitting one non-null Killing vector field are best studied with the projection formalism of Geroch. When the Killing vector is lightlike, the projection onto the orbit space still exists and one expects a covariant
B. Julia, Bel, Brinkmann, Cartan, Cartan, Dixon, Dombrowski, Duval, Duval, Ehlers, Ehlers, Friedrichs, Geroch, Geroch, Goenner, H. Nicolai, Julia, Julia, Kramer, Kundt, Künzle, Künzle, Le Bellac, MacDowell, Mason, Nicolai, Trautman, Trautman, Weyl, Witten   +29 more
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Weakly charged generalized Kerr-NUT-(A)dS spacetimes

, 2017
We find an explicit solution of the source free Maxwell equations in a generalized Kerr-NUT-(A)dS spacetime in all dimensions. This solution is obtained as a linear combination of the closed conformal Killing-Yano tensor $h_{ab}$, which is present in ...
Frolov, Valeri P., Krtous, Pavel, Kubiznak, David   +2 more
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Lorentzian Flat Lie Groups Admitting a Timelike Left-Invariant Killing Vector Field [PDF]

, 2013
We call a connected Lie group endowed with a left-invariant Lorentzian flat metric Lorentzian flat Lie group. In this Note, we determine all Lorentzian flat Lie groups admitting a timelike left-invariant Killing vector field.
Lebzioui, Hicham
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Exactly solvable strings in Minkowski spacetime

, 2010
We study the integrability of the equations of motion for the Nambu-Goto strings with a cohomogeneity-one symmetry in Minkowski spacetime. A cohomogeneity-one string has a world surface which is tangent to a Killing vector field. By virtue of the Killing
Burden C J, Burden C J, Copeland E J, Dvali G, Frolov V P, Hideki Ishihara, Hiroshi Kozaki, Jackson M G, Kubiznak D, Tatsuhiko Koike, Zeldovich Y B   +10 more
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Killing vector fields with twistor derivative

, 2007
Motivated by the possible characterization of Sasakian manifolds in terms of twistor forms, we give the complete classification of compact Riemannian manifolds carrying a Killing vector field whose covariant derivative (viewed as a 2-form) is a twistor ...
Moroianu, Andrei
core   +5 more sources

No-horizon theorem for vacuum gravity with spacelike G1 isometry groups

, 2003
We show that (3+1) vacuum spacetimes admitting a global, spacelike, one-parameter Lie group of isometries of translational type cannot contain apparent horizons. The only assumption made is that of the existence of a global spacelike Killing vector field
B.K. Berger, C.W. Misner, D. Ida, E.T. Newman, E.T. Newman, F.B. Fuller, J. Eels, M.A. Pelath, R. Geroch, R. Geroch, S.L. Shapiro, S.M.C.V. Gonçalves, S.W. Hawking, Sérgio M. C. V. Gonçalves, T.A. Apostolatos, V. Moncrief, Y. Nutku   +16 more
core   +1 more source