The importance of quantum effects in superconducting cosmic strings.

Details The importance of quantum effects in superconducting cosmic strings. The importance of quantum effects in superconducting cosmic strings.

Nov 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999ijtp...38.3111p&link_type=abstract

International Journal of Theoretical Physics, Vol. 38, No. 11, p. 3111 - 3122

Physics

Cosmic Strings

Scientific paper

Classical current-carrying cosmic string loop motion is investigated by means of a numerical simulation making explicit use of the Carter formalism and the Carter-Peter rational and logarithmic equations of state. The class of initial configurations consists of elliptic loops far from the vorton equilibrium state with constant state parameter along the loop. Thus, the relevant parameters, apart from those describing the equation of state itself, are the ellipticity and the initial state parameter. It is found that for most of the parameter space, the loop motion is quasiperiodic, but that this result is actually irrelevant to the treatment of an arbitrary loop motion: indeed, almost systematically, the loops develop kinks and cusps, and in the case of spacelike currents, there are segments of the loop that escape the elastic regime. It is then argued that quantum effects resulting from these situations will in practice provide the dominant evolution mechanisms.

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