On Classification of Modular Tensor Categories Academic Article uri icon


  • We classify all unitary modular tensor categories (UMTCs) of rank 4. There are a total of 35 UMTCs of rank 4 up to ribbon tensor equivalence. Since the distinction between the modular S-matrix S and -S has both topological and physical significance, so in our convention there are a total of 70 UMTCs of rank 4. In particular, there are two trivial UMTCs with S = (1). Each such UMTC can be obtained from 10 non-trivial prime UMTCs by direct product, and some symmetry operations. Explicit data of the 10 non-trivial prime UMTCs are given in Sect. 5. Relevance of UMTCs to topological quantum computation and various conjectures are given in Sect. 6. The Author(s) 2009.

published proceedings


author list (cited authors)

  • Rowell, E., Stong, R., & Wang, Z.

citation count

  • 161

complete list of authors

  • Rowell, Eric||Stong, Richard||Wang, Zhenghan

publication date

  • December 2009