Journal
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
Volume -, Issue -, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1742-5468/2014/01/P01008
Keywords
conformal field theory; spin chains; ladders and planes (theory); entanglement in extended quanturn systems (theory)
Categories
Funding
- ERC QUAGATUA
- [FP7-PEOPLE-20-10-IIF ENGAGES 273524]
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We study the Renyi entropies of N disjoint intervals in the conformal field theories describing, the free compactified boson and the Ising model. They are computed as the 2N-point function of twist fields. by employing the partition function of the model on a particular class of Riemann surfaces. The results are Writ ten in terms of Riemann theta functions. The prediction for the free boson in the decompactification regime is checked against exact results for the harmonic chain. For the Ising model. matrix product state computations agree with the conformal field theory result once the finite size corrections have been taken into account.
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