Chameleon stars

Details Chameleon stars Chameleon stars

2011-06-07

arxiv.org/abs/1106.1267v2

Phys. Rev. D 84, 084025 (2011)

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

final version, to be published in PRD

Scientific paper

We consider a gravitating spherically symmetric configuration consisting of a scalar field non-minimally coupled to ordinary matter in the form of a perfect fluid. For this system we find static, regular, asymptotically flat solutions for both relativistic and non-relativistic cases. It is shown that the presence of the non-minimal interaction leads to substantial changes both in the radial matter distribution of the star and in the star's total mass. A simple stability test indicates that, for the choice of parameters used in the paper, the solutions are unstable.

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