Double brane holographic model dual to 2d ICFTs
arXiv:2206.01752 · doi:10.1007/JHEP10(2022)022
Abstract
A minimal single-brane holographic model can be used as a dual to 2d conformal interfaces (ICFTs) to calculate the transmission coefficient of energy transported across the defect as well as boundary entropy , the additional entanglement entropy for some sub-region that encloses the defect. Both and are uniquely determined by the tension characterizing the brane. In contrast, in field theory defects typically the transmission coefficient can be dialed from 0 to 1 independently for each allowed value of . To address this discrepancy, we look at a double brane (3-region bulk) holographic model. Merger of two single brane interfaces creates genuinely new interfaces which indeed allow a range of accessible transmission coefficients for a fixed value of . In particular, the limit of two completely decoupled BCFTs can be achieved.
arXiv comment23 pages, 6 images; v2: added minor clarifications regarding the allowed tension ranges, and comments on saturating the AANEC bound in those ranges
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