Abstract:
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.
Description:
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.
