Cliffold algebras, modular Virasoro vertex operator algebras and Z[1/2]-forms

Chongying Dong, Ching Hung Lam, Li Ren

This paper consists of two parts: (1) Using a Z[1/2]-form of Virasoro vertex operator algebra L(1/2,0) with central charge 1/2, we obtain a modular vertex operator algebra over any…