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Communications in Mathematical Physics

Singular Limits of Relative Entropy in Two Dimensional Massive Free Fermion Theory

Feng Xu

Published Mar 22, 2023• 3 citations
Publisher

Abstract

Abstract We show that certain singular limits of relative entropy of vacuum states in two dimensional massive free fermion theory exist and compute these limits. As an application we show that the c function computed by Casini and Huerta based on heuristic arguments arise naturally as a consequence of our results.
DOI
10.1007/s00220-023-04687-9

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