Quantum dimension as entanglement entropy in two dimensional conformal field theories
Quantum dimension as entanglement entropy in two dimensional conformal field theories
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量子维数作为二维共形场论中的纠缠熵
DOI:
10.1103/physrevd.90.041701
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发表时间:
2014-03
期刊:
影响因子:
--
通讯作者:
Kento Watanabe
中科院分区:
文献类型:
--
作者:
何松;Tokiro Numasawa;Tadashi Takayanagi;Kento Watanabe
We study the entanglement entropy of excited states in two-dimensional conformal field theories (CFTs). In particular, we consider excited states obtained by acting on a vacuum with primary operators. We show that the entanglement entropy increases by a finite constant amount under its time evolution. Moreover, in rational conformal field theories, we prove that this increase of the (both Renyi and von Neumann) entanglement entropy always coincides with the log of the quantum dimension of the primary operator.
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