Topological neutron stars in tensormultiscalar theories of gravity
Abstract
In the present paper we demonstrate that there exists a new type of neutron stars in the tensormultiscalar theories of gravity. We call this new type of neutron stars topological neutron stars. In addition to the standard characteristics of the usual neutron stars the topological neutron stars are also characterized by a topological charge. We numerically construct explicit examples of topological neutron stars in tensormultiscalar theories whose target space is S^{3}. Besides the topological charge the topological neutron stars also exhibit other attractive features which can place them among the realistic compact objects that could exist in nature. For example they possess zero scalar charge and thus evade the strong binary pulsar constraints on the dipole scalar radiation.
 Publication:

Physical Review D
 Pub Date:
 March 2020
 DOI:
 10.1103/PhysRevD.101.064072
 arXiv:
 arXiv:1911.06908
 Bibcode:
 2020PhRvD.101f4072D
 Keywords:

 General Relativity and Quantum Cosmology;
 Astrophysics  High Energy Astrophysical Phenomena
 EPrint:
 6 pages, 6 figures