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arXiv · 2005.09105

Classification of Convergent OPE Channels for Lorentzian CFT Four-Point Functions

Jiaxin Qiao
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Abstract

We analyze the convergence properties of operator product expansions (OPE) for Lorentzian CFT four-point functions of scalar operators. We give a complete classification of Lorentzian four-point configurations. All configurations in each class have the same OPE convergence properties in s-, t- and u-channels. We give tables including the information of OPE convergence for all classes. Our work justifies that in a subset of the configuration space, Lorentzian CFT four-point functions are genuine analytic functions. Our results are valid for unitary CFTs in $d\geq2$. Our work also provides some Lorentzian regions where one can do bootstrap analysis in the sense of functions.

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Jiaxin Qiao. 2020-05-18. Classification of Convergent OPE Channels for Lorentzian CFT Four-Point Functions. https://doi.org/10.21468/scipostphys.13.4.093

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