Sigma Model Q-balls and Q-Stars

Details Sigma Model Q-balls and Q-Stars Sigma Model Q-balls and Q-Stars

2007-08-24

arxiv.org/abs/0708.3283v2

Phys.Rev.D76:085018,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Erroneous fig 5 corrected

Scientific paper

10.1103/PhysRevD.76.085018

A new kind of Q-balls is found: Q-balls in a non-linear sigma model. Their main properties are presented together with those of their self-gravitating generalization, sigma model Q-stars. A simple special limit of solutions which are bound by gravity alone (``sigma stars'') is also discussed briefly. The analysis is based on calculating the mass, global U(1) charge and binding energy for families of solutions parameterized by the central value of the scalar field. Two kinds (differing by the potential term) of the new sigma model Q-balls and Q-stars are analyzed. They are found to share some characteristics while differing in other respects like their properties for weak central scalar fields which depend strongly on the form of the potential term. They are also compared with their ``ordinary'' counterparts and although similar in some respects, significant differences are found like the existence of an upper bound on the central scalar field. The sigma model Q-stars also contain non-solitonic solutions whose relation with sigma star solutions is discussed.

Affiliated with

Also associated with

No associations

Rating

Sigma Model Q-balls and Q-Stars 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 Sigma Model Q-balls and Q-Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sigma Model Q-balls and Q-Stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-394895