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Please use this identifier to cite or link to this item: http://dspace.utalca.cl/handle/1950/1551

Title: Scalar fields nonminimally coupled to pp waves
Authors: Ayon-Beato, E.
Hassaine, M.
Keywords: massive gaude - theories
gravity theories
Issue Date: Apr-2005
Publisher: The American Institute of Physics
Citation: Physical Review D 71 (8): Art. No. 084004
Abstract: Here, we report pp waves configurations of three-dimensional gravity for which a scalar field nonminimally coupled to them acts as a source. In absence of self-interaction the solutions are gravitational plane waves with a profile fixed in terms of the scalar wave. In the self-interacting case, only power-law potentials parameterized by the nonminimal coupling constant are allowed by the field equations. In contrast with the free case the self-interacting scalar field does not behave like a wave since it depends only on the wave-front coordinate. We address the same problem when gravitation is governed by topologically massive gravity and the source is a free scalar field. From the pp waves derived in this case, we obtain at the zero topological mass limit, new pp waves solutions of conformal gravity for any arbitrary value of the nonminimal coupling parameter. Finally, we extend these solutions to the self-interacting case of conformal gravity.
Description: Hassaine, M. Instituto de Matemática y Física, Universidad de Talca, Casilla 747, Talca, Chile.
Disponible en http://arxiv.org/abs/hep-th/0501040v3
URI: http://dspace.utalca.cl/handle/1950/1551
ISSN: 0556-2821
Appears in Collections:Artículos en publicaciones ISI - Universidad de Talca

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