Boson star and dark matter

TL;DR

This paper models boson stars as dark matter candidates by solving Einstein-Klein-Gordon equations with a cosmological constant, exploring their properties across various masses and self-interactions.

Contribution

It introduces a geometric approach to analyze boson stars with anisotropic matter distribution, extending previous models and calculating relevant parameters.

Findings

Boson star configurations depend on anisotropic matter distribution.

The geometric method effectively models a wide range of boson star properties.

Self-interaction parameters are quantitatively determined.

Abstract

Bound states of complex scalar fields (boson stars) have long been proposed as possible candidates for the dark matter in the universe. Considerable work has already been done to study various aspects of boson stars. In the present work, assuming a particular anisotropic matter distribution, we solve the Einstein-Klein-Gordon equations with a cosmological constant to obtain bosonic configurations by treating the problem geometrically. The results are then applied to problems covering a wide range of masses and radii of the boson stars and the relevant self interaction parameters are calculated. We compare our results with earlier treatments to show the applicability of the geometrical approach.