Evolution of entanglement entropy in orbifold CFTs

Evolution of entanglement entropy in orbifold CFTs
复制标题

DOI:
10.1088/1751-8121/aa6e08
复制
发表时间:
2017-01
期刊:
Journal of Physics A: Mathematical and Theoretical
影响因子:
--
通讯作者:
Paweł Caputa;Yuya Kusuki;T. Takayanagi;Kento Watanabe
Paweł Caputa;Yuya Kusuki;T. Takayanagi;Kento Watanabe
中科院分区:
其他
文献类型:
--
作者:
Paweł Caputa;Yuya Kusuki;T. Takayanagi;Kento Watanabe

文献摘要

相似文献

本文研究了在n/Zn和n/Sn的循环轨道(T2)和对称轨道(T2)中,由扭转算子产生的局域激发态的r<s:1>纠缠熵的时间演化。我们发现当它的紧化半径的平方是有理时,第二个rsamnyi熵接近于一个等于扭转算子量子维数的对数的通用常数。另一方面,在非有理情况下,我们发现了循环轨道CFT由时间loglogt的双对数给出的r<s:1>熵的一个新的标度律。
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 loglog⁡t for the cyclic orbifold CFT.