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Type: Artigo de periódico
Title: Lifetime and decay of unstable particles in strong gravitational fields
Author: Fregolente, D
Saa, A
Abstract: We consider here the decay of unstable particles in geodesic circular motion around compact objects. For the neutron, in particular, strong and weak decay are calculated by means of a semiclassical approach. Noticeable effects are expected to occur as one approaches the photonic circular orbit of realistic black holes. We argue that, in such a limit, the quasithermal spectrum inherent to extremely relativistic observers in circular motion plays a role similar to the Unruh radiation for uniformly accelerated observers.
Country: EUA
Editor: Amer Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevD.77.103010
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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