Bosonic gas as a Galactic Dark Matter Halo

TL;DR

This paper investigates multi-state bosonic configurations as models for galactic dark matter halos, analyzing their stability and properties to better match observed galaxy rotation curves.

Contribution

It introduces a detailed numerical analysis of multi-state bosonic configurations, highlighting their stability dependence on particle distribution and their potential as realistic dark matter halo models.

Findings

Multi-state configurations can be stable depending on particle distribution.

These configurations produce more realistic galaxy rotation curves.

Numerical methods distinguish stable from unstable solutions.

Abstract

We study in detail the properties of gravitationally-bounded multi-state configurations, made of spin-zero bosons, in the Newtonian regime. We show that the properties of such configurations, in particular their stability, depend upon how the particles are distributed in the different states they are composed of. Numerical techniques are used to distinguish between stable and unstable solutions, and to determine the final configurations they evolve towards to. Multi-state equilibrium configurations can be used as models of galactic halos made of scalar field dark matter, whose rotation curves appear more realistic than in the case of single-state configurations.