Charged compact boson stars and shells in the presence of a cosmological constant
Abstract
In this work, we study the boson stars and boson shells in a theory involving massive complex scalar fields coupled to the U(1) gauge field and gravity in a conical potential in the presence of a cosmological constant Λ which we treat as a free parameter taking positive and negative values and thereby allowing us to study the theory in the de Sitter and antide Sitter spaces respectively. Boson stars are found to come in two types, having either balllike or shelllike charge density. We have studied the properties of these solutions and have also determined their domains of existence for some specific values of the parameters of the theory. Similar solutions have also been obtained by Kleihaus et al. in a theory involving massless complex scalar fields coupled to the U(1) gauge field and gravity in a conical potential in the absence of a cosmological constant Λ .
 Publication:

Physical Review D
 Pub Date:
 December 2016
 DOI:
 10.1103/PhysRevD.94.125023
 arXiv:
 arXiv:1709.09449
 Bibcode:
 2016PhRvD..94l5023K
 Keywords:

 High Energy Physics  Theory;
 General Relativity and Quantum Cosmology
 EPrint:
 20 pages, 66 figures. arXiv admin note: text overlap with arXiv:1605.02925