Theory of U ( 1 ) gauged Q -balls revisited

In this paper, the main properties of (3 + 1)-dimensional U(1) gauged Q balls are examined. In particular, it is shown that the relation dE/dQ = omega holds for such gauged Q balls in the general case. As a consequence, it is shown that the well-known estimate for the maximal charge of stable gauged...

Full description

Saved in:
Bibliographic Details
Published in:Physical review. D, Particles, fields, gravitation, and cosmology Particles, fields, gravitation, and cosmology, 2014-04, Vol.89 (8), Article 085006
Main Authors: Gulamov, I. E., Nugaev, E. Ya, Smolyakov, M. N.
Format: Article
Language:English
Subjects:
Approximation
Constants
Cosmology
Exact solutions
Gravitation
Mathematical analysis
Perturbation methods
Scalars
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, the main properties of (3 + 1)-dimensional U(1) gauged Q balls are examined. In particular, it is shown that the relation dE/dQ = omega holds for such gauged Q balls in the general case. As a consequence, it is shown that the well-known estimate for the maximal charge of stable gauged Q balls was derived by means of an inconsistent procedure and cannot be considered as correct. A simple method for obtaining the main characteristics of gauged Q balls using only the nongauged background solution for the scalar field in the case, when the backreaction of the gauge field on the scalar field is small and the linearized theory can be used, is proposed. The criteria of applicability of the linearized theory, which do not reduce to the demand of the smallness of the coupling constant, are established. Some interesting properties of gauged Q balls, as well as the advantages of the proposed method, are demonstrated by the example of two models, admitting, in the linear approximation in the perturbations, exact analytic solutions for gauged Q balls.
ISSN:1550-7998
1550-2368
DOI:10.1103/PhysRevD.89.085006