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Exact results for the entanglement across defects in critical chains

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arxiv 1201.4104 v2 pith:OWGZH5JT submitted 2012-01-19 cond-mat.stat-mech

Ingo Peschel , Viktor Eisler This is my paper · ORCID
classification cond-mat.stat-mech
keywords entanglementbosonicchainsresultsacrossanalyticalcalculatecase
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We consider fermionic and bosonic quantum chains where a defect separates two subsystems and compare the corresponding entanglement spectra. With these, we calculate their R\'enyi 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.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Exactly solvable non-unitary conformal interfaces in unitary CFTs

    cond-mat.stat-mech 2026-06 unverdicted novelty 7.0 of 10

    An SL(2,C)-parametrized family of exactly solvable non-unitary conformal interfaces is constructed on the lattice in unitary CFTs via analytic continuation, leading to a non-unitary Cardy condition and logarithmic ent...

  2. A critical state under weak measurement is not critical

    cond-mat.stat-mech 2024-11 accept novelty 7.0 of 10

    Weakly measured critical free fermions have a gapped and long-ranged entanglement Hamiltonian while preserving logarithmic entanglement entropy.

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