Relativistic polytropic spheres embedded in a chameleon scalar field

Details Relativistic polytropic spheres embedded in a chameleon scalar field Relativistic polytropic spheres embedded in a chameleon scalar field

2011-12-08

arxiv.org/abs/1112.1786v3

Phys. Rev. D 85, 064045 (2012)

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

16 pages, 4 figures; minor corrections to content, version published in PRD

Scientific paper

10.1103/PhysRevD.85.064045

In this paper we investigate gravitationally bound, spherically symmetric equilibrium configurations consisting of ordinary (polytropic) matter nonminimally coupled to an external chameleon scalar field. We show that this system has static, regular, asymptotically flat general relativistic solutions. The properties of these spherical configurations, such as total mass, distribution of matter, and size, depend strongly on the surrounding scalar field. The mass is found in terms of the parameter $\sigma$, which is proportional to the central mass density of the ordinary matter. We perform a stability analysis of these spherical solutions and find an upper bound for $\sigma$ where dynamical instability occurs.

Affiliated with

Also associated with

No associations

Rating

Relativistic polytropic spheres embedded in a chameleon scalar field does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Relativistic polytropic spheres embedded in a chameleon scalar field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Relativistic polytropic spheres embedded in a chameleon scalar field will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-547693