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Beyond Calabrese-Cardy Scaling: Exceptional-Point Sensitivity and the de Sitter RT Surface
Entanglement entropy at one-dimensional criticality typically follows the Calabrese--Cardy scaling. In the non-Hermitian critical free-fermion systems studied here, however, we find an additional interval-independent contribution $S_{\rm res}=\log(ΔL)$, which allows the entropy to remain s
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