TL;DR
This paper compares different types of Q-stars with their flat space counterparts, revealing new features and solutions, including non-solitonic ones without flat space limits, across various scalar field regimes.
Contribution
It provides a detailed analysis of Q-star properties, highlighting differences from Q-balls and discovering non-solitonic solutions lacking flat space analogues.
Findings
Identification of non-solitonic solutions without flat space limits
Differences between solitonic and non-solitonic Q-stars in various regimes
New features in Q-star models compared to Q-balls
Abstract
The properties of several types of Q-stars are studied and compared with their flat space analogues, i.e. Q-balls. The analysis is based on calculating the mass, global U(1) charge and binding energy for families of solutions parametrized by the central value of the scalar field. The two most frequently used Q-star models (differing by their potential term) are studied. Although there are general similarities between both Q-star types, there are important differences as well as new features with respect to the non-gravitating systems. We find non-solitonic solutions which do not have a flat space limit, in the weak (scalar) field region as well as in the opposite region of strong central scalar field for which there does not exist Q-ball solutions at all.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.