Twisted Elliptic Genera of N=2 SCFTs in Two Dimensions

Details Twisted Elliptic Genera of N=2 SCFTs in Two Dimensions Twisted Elliptic Genera of N=2 SCFTs in Two Dimensions

2009-09-10

arxiv.org/abs/0909.1879v2

Physics

High Energy Physics

High Energy Physics - Theory

28 pages; v2 refs added

Scientific paper

The elliptic genera of two-dimensional N=2 superconformal field theories can be twisted by the action of the integral Heisenberg group if their U(1) charges are fractional. The basic properties of the resulting twisted elliptic genera and the associated twisted Witten indices are investigated with due attention to their behaviors in orbifoldization. Our findings are illustrated by and applied to several concrete examples. We give a better understanding of the duality phenomenon observed long before for certain Landau-Ginzburg models. We revisit and prove an old conjecture of Witten which states that every ADE Landau-Ginzburg model and the corresponding minimal model share the same elliptic genus. Mathematically, we establish ADE generalizations of the quintuple product identity.

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