Cosmic-string loop self-intersections and intercommuting

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)1768-1771
Number of pages4
JournalPhysical Review D
Issue number6
StatePublished - Jan 1 1989
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)


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