Lifetime and decay of unstable particles in strong gravitational fields

Details Lifetime and decay of unstable particles in strong gravitational fields Lifetime and decay of unstable particles in strong gravitational fields

2007-12-17

arxiv.org/abs/0712.2787v2

Phys.Rev.D77:103010,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

6 pages, 4 figures. Final version to appear in PRD

Scientific paper

10.1103/PhysRevD.77.103010

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 quasi-thermal spectrum inherent to extremely relativistic observers in circular motion plays a role similar to the Unruh radiation for uniformly accelerated observers.

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