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Lower bound on the entropy of boundaries and junctions in 1+1d quantum critical systems

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arxiv 1206.5395 v1 pith:VLUNBEYP submitted 2012-06-23 hep-th cond-mat.stat-mechquant-ph

classification hep-thcond-mat.stat-mechquant-ph
keywords bulkcriticalboundboundaryentropylowerquantumsystems
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A lower bound is derived for the boundary entropy s = ln g of a 1+1d quantum critical system with boundary, under the conditions that the bulk conformal central charge c is >=1 and the most relevant bulk scaling dimension is >(c-1)/12. This is the first general restriction on the possible values of g for bulk critical systems with c >= 1.

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  1. The Bootstrap of Points and Lines

    hep-th 2025-06 accept novelty 8.0 of 10

    A mixed-correlator bootstrap for 2D boundary CFTs produces new rigorous bounds on boundary entropy, bulk-to-boundary OPE coefficients, and gap spectra, tested on Ising and free boson and applied to su(2)_2 WZW.

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