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- W3104335907 abstract "A bstract We study the two-point function of local operators in the presence of a defect in a generic conformal field theory. We define two pairs of cross ratios, which are convenient in the analysis of the OPE in the bulk and defect channel respectively. The new coordinates have a simple geometric interpretation, which can be exploited to efficiently compute conformal blocks in a power expansion. We illustrate this fact in the case of scalar external operators. We also elucidate the convergence properties of the bulk and defect OPE decompositions of the two-point function. In particular, we remark that the expansion of the two-point function in powers of the new cross ratios converges everywhere, a property not shared by the cross ratios customarily used in defect CFT. We comment on the crucial relevance of this fact for the numerical bootstrap." @default.
- W3104335907 created "2020-11-23" @default.
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- W3104335907 date "2018-11-01" @default.
- W3104335907 modified "2023-10-04" @default.
- W3104335907 title "Radial coordinates for defect CFTs" @default.
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- W3104335907 doi "https://doi.org/10.1007/jhep11(2018)148" @default.
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