Modular Invariants and Twisted Equivariant K-theory
Modular Invariants and Twisted Equivariant K-theory
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模不变量和扭曲等变 K 理论
DOI:
10.4310/cntp.2009.v3.n2.a1
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发表时间:
2008
期刊:
影响因子:
--
通讯作者:
T. Gannon
中科院分区:
文献类型:
--
作者:
David E. Evans;T. Gannon
Freed-Hopkins-Teleman expressed the Verlinde algebra as twisted equivariant K-theory. We study how to recover the full system (fusion algebra of defect lines), nimrep (cylindrical partition function), etc of modular invariant partition functions of conformal field theories associated to loop groups. We work out several examples corresponding to conformal embeddings and orbifolds. We identify a new aspect of the A-D-E pattern of SU(2) modular invariants.