Exact results for the entanglement across defects in critical ch

Author(s): I. Peschel, V. Eisler

Journal: J. Phys. A: Math. Theor.

Volume: 45

Page(s): 155301

Year: 2012

DOI Number: 10.1088/1751-8113/45/15/155301

Link: Link to publication


We consider fermionic and bosonic quantum chains where a defect separates two subsystems and compare the corresponding entanglement spectra. With these, we calculate their Rényi entanglement entropies and obtain analytical formulae for the continuously varying coefficient of the leading logarithmic term. For the bosonic case we also present numerical results.

Note: http://arxiv.org/abs/1201.4104

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