Boson stars in massive dilatonic gravity

Abstract

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.

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

References in corpus (3)

• Gravitational Stability of Boson Stars
• Charged Scalar-Tensor Boson Stars: Equilibrium, Stability and Evolution
• Tensor mass and particle number peak at the same location in the scalar-tensor gravity boson star models - an analytical proof

Cited by in corpus (8)

• TOPICAL REVIEW: General relativistic boson stars
• Boson stars with negative cosmological constant
• Scalar field mass in generalized gravity
• Mathematical Modeling of Boson-Fermion Stars in the Generalized Scalar-Tensor Theories of Gravity
• Withholding Potentials, Absence of Ghosts and Relationship between Minimal Dilatonic Gravity and f(R) Theories
• Boson stars in SU(2) Yang-Mills-scalar field theories
• Compact static stars in minimal dilatonic gravity
• New Numerical Algorithm for Modeling of Boson-Fermion Stars in Dilatonic Gravity