False Vacuum Lumps with Fermions

Details False Vacuum Lumps with Fermions False Vacuum Lumps with Fermions

2004-12-02

arxiv.org/abs/gr-qc/0412013v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

16 pages,12 figures

Scientific paper

This paper studies false vacuum lumps surrounded by the true vacuum in a real scalar field potential in flat spacetime. Fermions reside in the core of the lump, which are coupled with the scalar field via Yukawa interaction. Such lumps are stable against spherical collapse and deformation from spherical shape based on energetics considerations. The fermions inside the lump are treated as a uniform Fermi gas. We consider the Fermi gas in both ultrarelativistic and nonrelativistic limits. The mass and size of these lumps depend on the scale characterizing the scalar field potential as well as the mass density of the fermions.

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