Gravitating Fermionic Lumps with a False Vacuum Core

Details Gravitating Fermionic Lumps with a False Vacuum Core Gravitating Fermionic Lumps with a False Vacuum Core

2003-07-16

arxiv.org/abs/gr-qc/0307075v3

Prog.Theor.Phys. 110 (2004) 1151-1168

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

17 pages, 16 figures. Final published version

Scientific paper

10.1143/PTP.110.1151

We investigate gravitating lumps with a false vacuum core surrounded by the true vacuum in a scalar field potential. Such configurations become possible in the Einstein gravity in the presence of fermions at the core. Gravitational interactions as well as Yukawa interactions are essential for such lumps to exist. The mass and size of gravitating lumps sensitively depend on the scale characterizing the scalar field potential and the density of fermions. These objects can exist in the universe at various scales.

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