Exact results for the entanglement across defects in critical ch
Author(s): I. Peschel, V. Eisler
Journal: J. Phys. A: Math. Theor.
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 File: Link to PDF