Boson stars and oscillatons in an inflationary universe

Details Boson stars and oscillatons in an inflationary universe Boson stars and oscillatons in an inflationary universe

2010-07-02

arxiv.org/abs/1007.0388v1

Phys.Rev.D82:044043,2010

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

19 pages, 5 figures

Scientific paper

10.1103/PhysRevD.82.044043

Spherically symmetric gravitationally bound, oscillating scalar lumps (boson stars and oscillatons) are considered in Einstein's gravity coupled to massive scalar fields in 1+D dimensional de Sitter-type inflationary space-times. We show that due to inflation bosons stars and oscillatons lose mass through scalar radiation, but at a rate that is exponentially small when the expansion rate is slow.

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