Self-force on a scalar particle in a class of wormhole spacetimes

Details Self-force on a scalar particle in a class of wormhole spacetimes Self-force on a scalar particle in a class of wormhole spacetimes

2009-01-05

arxiv.org/abs/0901.0480v3

Phys.Rev.D79:064012,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

15 pages, 2 figures

Scientific paper

10.1103/PhysRevD.79.064012

We consider the self-energy and the self-force for scalar massive and massless particles at rest in the wormhole space-time. We develop a general approach to obtain the self-force and apply it to the two specific profiles of the wormhole throat, namely, with singular and with smooth curvature. We found that the self-force changes its sign at the point where nonminimal coupling $\xi = 1/8$ (for massless case) and it tends to infinity for specific values of $\xi$. It may be attractive as well repulsive depending on the profile of the throat. For massless particle and minimal coupling case the electromagnetic results are recovered.

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