2006/08/24 by Argelia Bernal, F. Siddhartha Guzman, F. S. Guzmán · 83 citations
Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Boundary value problem #Circular symmetry #Classical mechanics #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Geometry #Mathematical physics #Perfect fluid #Physics #Quantum mechanics #Scalar (mathematics) #Scalar field #astro-ph #gr-qc #hep-th
paper · pdf · doi:10.1103/physrevd.74.063504
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 74(6) (American Physical Society) · 8 revtex pages, 10 eps figures. Accepted for publication in PRD
arxiv created 2006/08/24 · openalex publication_date 2006/09/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We show the evolution of nonspherically symmetric balls of a self-gravitating scalar field in the Newtonian regime or equivalently an ideal self-gravitating condensed Bose gas. In order to do so, we use a finite differencing approximation of the Schr"odinger-Poisson (SP) system of equations with axial symmetry in cylindrical coordinates. Our results indicate: (i) that spherically symmetric ground state equilibrium configurations are stable against nonspherical perturbations and (ii) that such configurations of the SP system are late-time attractors for nonspherically symmetric initial profiles of the scalar field, which is a generalization of such behavior for spherically symmetric initial profiles. Our system and the boundary conditions used, work as a model of scalar field dark matter collapse after the turnaround point. In such case, we have found that the scalar field overdensities tolerate nonspherical contributions to the profile of the initial fluctuation.