Decay of boson stars with application to glueballs and other real scalars

Abstract

Massive real scalar particles, for instance glueballs from a posited hidden sector, are interesting dark matter candidates. If they possess repulsive self interactions that can oppose gravity, they can potentially clump into massive boson stars. The authors show that the same repulsive self interactions also mediate number changing annihilation processes, which may preclude the existence of these stars for cosmologically relevant times and would exclude the parameter space where such stars could provide interesting gravitational wave signatures.

Topics & Concepts