More Curiosities at Effective c = 1

Abstract

The moduli space of all rational conformal quantum field theories with effective central charge c_eff = 1 is considered. Whereas the space of unitary theories essentially forms a manifold, the non unitary ones form a fractal which lies dense in the parameter plane. Moreover, the points of this set are shown to be in one-to-one correspondence with the elements of the modular group for which an action on this set is defined.

13 pp. LaTeX with 2 PostScript figures (finally in compressed bitmap format to save disk space)

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