Evolution of entanglement entropy in orbifold CFTs
Evolution of entanglement entropy in orbifold CFTs
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DOI:
10.1088/1751-8121/aa6e08
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发表时间:
2017-01
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影响因子:
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通讯作者:
Paweł Caputa;Yuya Kusuki;T. Takayanagi;Kento Watanabe
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文献类型:
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作者:
Paweł Caputa;Yuya Kusuki;T. Takayanagi;Kento Watanabe
In this work we study the time evolution of the Rényi entanglement entropy for locally excited states created by twist operators in the cyclic orbifold (T2)n/Zn and the symmetric orbifold (T2)n/Sn. We find that when the square of its compactification radius is rational, the second Rényi entropy approaches a universal constant equal to the logarithm of the quantum dimension of the twist operator. On the other hand, in the non-rational case, we find a new scaling law for the Rényi entropies given by the double logarithm of time loglogt for the cyclic orbifold CFT.