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Cosmic-string loop self-intersections and intercommuting
Phys. Rev. D 39, 1768 – Published 15 March, 1989
DOI: https://doi.org/10.1103/PhysRevD.39.1768
Abstract
We find that the self-intersection of a closed curve (loop) is characterized by a jump in the self-linkage number of the loop. This is used to study the self-intersections of a mathematical closed curve evolving according to the Nambu action. We also show that segments of cosmic string cannot simply pass through one another at a self-intersection. Instead, intercommuting is found to be energetically favorable in the case of untwisted global strings.
References (11)
- For a review, see A. Vilenkin, Phys. Rep. 121, 265 (1985).
- T. Vachaspati and A. Vilenkin, Phys. Rev. D 30, 2036 (1984).
- N. Turok, Nucl. Phys. B242, 520 (1984); A. L. Chen, D. A. DiCarlo and S. A. Hotes, Phys. Rev. D 37, 863 (1988).
- P. Shellard, Nucl. Phys. B283, 624 (1987); R. Matzner, University of Texas report, 1987 (unpublished).
- D. Garfinkle and T. Vachaspati, Phys. Rev. D 36, 2229 (1987).
- For example, see H. Flanders, Differential Forms (Academic, New York, 1963).
- C. Thompson, Phys. Rev. D 37, 2283 (1988).
- A. Albrecht and T. York, Phys. Rev. D 38, 2958 (1988). In this work the problem of self-intersections has been treated via linkages in a somewhat different way than that given here. This paper is recommended to the reader for a full and detailed treatment of self-intersections.
- T. W. B. Kibble, Phys. Rep. 67, 183 (1980).
- Twisted strings have been studied by R. Davis, Nucl. Phys. B294, 867 (1987).
- M. A. Berger and G. B. Field, J. Fluid Mech. 147, 133 (1984), and references therein.