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oai:recercat.cat:2445/123282025-12-04T20:45:30Zcom_2072_1057col_2072_478822col_2072_478917

Perturbations on domain walls and strings: A covariant theory Garriga Torres, Jaume Vilenkin, A. (Alexander) Teoria de camps (Física) Partícules (Física nuclear) Field theory (Physics) Particles (Nuclear physics) A covariant formalism is developed for describing perturbations on vacuum domain walls and strings. The treatment applies to arbitrary domain walls in (N+1)-dimensional flat spacetime, including the case of bubbles of a true vacuum nucleating in a false vacuum. Straight strings and planar walls in de Sitter space, as well as closed strings and walls nucleating during inflation, are also considered. Perturbations are represented by a scalar field defined on the unperturbed wall or string world sheet. In a number of interesting cases, this field has a tachyonic mass and a nonminimal coupling to the world-sheet curvature. 2010-05-06T08:49:00Z 2010-05-06T08:49:00Z 1991 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 0556-2821 https://hdl.handle.net/2445/12328 507971 eng Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevD.43.391 Physical Review D, 1991, vol. 44, núm. 4, p. 1007-1014 http://dx.doi.org/10.1103/PhysRevD.43.391 (c) The American Physical Society, 1991 info:eu-repo/semantics/openAccess 8 p. application/pdf The American Physical Society Articles publicats en revistes (Física de la Matèria Condensada)