The lifetime of a massive particle in a de Sitter universe
作者： Ugo Moschella , Jacques Bros , Henri Epstein
DOI: 10.1088/1475-7516/2008/02/003
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摘要: We study particle decay in de Sitter spacetime as given by first-order perturbation theory an interacting quantum field theory. show that for fields with masses above a critical mass mc there is no such thing stability, so decays forbidden flat do occur there. The lifetime of also turns out to be independent its velocity when comparable the radius. Particles lower are even stranger: their products must obey quantification rules, and zero.
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