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.
18 pages, 7 figures; final version published in PRD
References in corpus (10)
- New Horizons for Fundamental Physics with LISA
- Modified Gravity and Cosmology: An Update by the CANTATA Network
- Spontaneous scalarization
- Rotating Boson Stars and Q-Balls II: Negative Parity and Ergoregions
- Scalarized Hairy Black Holes
- Gravity experiments with radio pulsars
- Induced scalarization in boson stars and scalar gravitational radiation
- Boson stars in massless and massive scalar-tensor gravity
- Nature of phase transitions and metastability in scalar-tensor theories
- On the phase transition mechanism of spontaneous scalarization