Boson stars in massive dilatonic gravity

Details Boson stars in massive dilatonic gravity Boson stars in massive dilatonic gravity

2000-01-31

arxiv.org/abs/gr-qc/0001103v2

Phys.Rev. D61 (2000) 124018

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages, latex, 9 figures, one figure dropped, new comments added, new references added, typos corrected

Scientific paper

10.1103/PhysRevD.61.124018

We study equilibrium configurations of boson stars in the framework of a class scalar-tensor theories of gravity with massive gravitational scalar (dilaton). In particular we investigate the influence of the mass of the dilaton on the boson star structure. We find that the masses of the boson stars in presence of dilaton are close to those in general relativity and they are sensitive to the ratio of the boson mass to the dilaton mass within a typical few percent. It turns out also that the boson star structure is mainly sensitive to the mass term of the dilaton potential rather to the exact form of the potential.

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