ZN×ZM orbifolds and discrete torsion

A. Font, L. E. Ibáñez, F. Quevedo

Research output: Contribution to journalArticlepeer-review


We extend previous work on ZN-orbifolds to the general ZN×ZM abelian case for the (2, 2) and (0, 2) models. We classify the corresponding (2, 2) compactifications and show that a number of models obtined by tensoring minimal N = 2 superconformal theories can be constructed as ZN×ZM-orbifolds. Furthermore, ZN×ZM-orbifolds allow the addition of discrete torsion which leads to new (2, 2) compactifications not considered previously. Some of the latter have negative Euler characteristic and Betti numbers equal to those of some complete intersection Calabi-Yau (CICY) manifolds. This suggests the existence of a previously overlooked connection between CICY models and orbifolds.

Original languageEnglish (US)
Pages (from-to)272-276
Number of pages5
JournalPhysics Letters B
Issue number3
StatePublished - Jan 26 1989

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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