Phase transitions of boson stars in scalar-tensor theories
arXiv:2509.05202 · doi:10.1103/8l73-dxxd
Abstract
In scalar-tensor theories, compact objects may experience spontaneous scalarization. Recently, it was shown that matter-induced spontaneous scalarization of neutron stars is predominantly associated with a first-order phase transition. Here we consider matter-induced spontaneous scalarization of boson stars. Employing a repulsive quartic potential for the bosonic matter, we find only first-order phase transitions.
arXiv comment18 pages, 7 figures; final version published in PRD
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