Abstract
Non-singular global cosmic strings are found in a non-linear sigma model with a potential term for a self-gravitating complex scalar field. Stationary solutions with angular momentum and possibly linear momentum are obtained by assuming an oscillatory dependence of the scalar field on t, φ and z. This dependence has an effect similar to gauging the global U(1) symmetry of the model, which is actually a Kaluza-Klein reduction from four to three spacetime dimensions. The method of analysis can be regarded as an extension of the gravito-electromagnetism formalism beyond the weak field limit.
Original language | English |
---|---|
Pages (from-to) | 2374-2379 |
Number of pages | 6 |
Journal | International Journal of Modern Physics A |
Volume | 20 |
Issue number | 11 |
DOIs | |
State | Published - 30 Apr 2005 |
Keywords
- Cosmic strings
- Gravito-electromagnetism
- Sigma models