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oai:recercat.cat:2445/123782025-12-04T20:42:58Zcom_2072_1057col_2072_478822col_2072_478917

00925njm 22002777a 4500 dc Garriga Torres, Jaume author Megevand, Ariel author 2010-05-06T09:31:30Z 2010-05-06T09:31:30Z 2004 "static" instanton, representing pair creation of critical bubbles¿a process somewhat analogous to thermal activation in flat space. In that case, the branes may stick together due to thermal symmetry restoration, and the pair creation rate depends exponentially on the ambient de Sitter temperature, switching off sharply as the temperature approaches zero. Such a static instanton may be well suited for the ¿saltatory¿ relaxation scenario proposed by Feng et al. Relativitat general (Física) Cosmologia Teoria de camps (Física) General relativity (Physics) Field theory (Physics) Cosmology Coincident brane nucleation and the neutralization of Lambda