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VOLUME 45 (1987) | ISSUE 12 | PAGE 556
Vortices on the world sheet of a string; critical dynamics
Vortices on the world sheet of a string which is moving in a multiply connected space lead to a continuous dependence of the critical indices, in particular, the critical dimensionality, on the parameters of cycles which cannot be contracted. There exist limiting values of the latter quantities because of a phase transition associated with a loss of conformal symmetry. Numerous applications are discussed.