We show that the phenomenon of spontaneous scalarization predicted in neutron stars within the framework of scalar-tensor tensor theories of gravity, also takes place in boson stars without including a self-interaction term for the boson field (other than the mass term), contrary to what was claimed before. The analysis is performed in the physical (Jordan) frame and is based on a 3+1 decomposition of spacetime assuming spherical symmetry.
@article{arxiv.1003.4767,
title = {Dynamic transition to spontaneous scalarization in boson stars},
author = {Miguel Alcubierre and Juan C. Degollado and Dario Nunez and Milton Ruiz and Marcelo Salgado},
journal= {arXiv preprint arXiv:1003.4767},
year = {2012}
}
Comments
Minor changes to match the final version to appear in PRD