期刊
PHYSICAL REVIEW LETTERS
卷 119, 期 26, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.119.261603
关键词
-
资金
- Deutsche Forschungsgemeinschaft through Excellence Cluster Nanosystems Initiative Munich
We show that rational conformal field theories in 1 + 1 dimensions on a Klein bottle, with a length L and width beta, satisfying L >> beta, have a universal entropy. This universal entropy depends on the quantum dimensions of the primary fields and can be accurately extracted by taking a proper ratio between the Klein bottle and torus partition functions, enabling the characterization of conformal critical theories. The result is checked against exact calculations in quantum spin-1/2 XY and Ising chains.
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