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Article overview
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Non-Gaussianity of Entanglement Entropy and Correlations of Composite Operators | | Satoshi Iso
; Takato Mori
; Katsuta Sakai
; | | Date: |
6 May 2021 | | Abstract: | This is an extended version of the previous paper arXiv:2103.05303 to study
entanglement entropy (EE) of a half space in interacting field theories. In the
previous paper, we have proposed a novel method to calculate EE based on the
notion of $mathbb{Z}_M$ gauge theory on Feynman diagrams, and shown that EE
consists of two particular contributions, one from a renormalized two-point
correlation function in the two-particle irreducible (2PI) formalism and
another from interaction vertices. In this paper, we further investigate them
in more general field theories and show that the non-Gaussian contributions
from vertices can be interpreted as renormalized correlation functions of
composite operators. | | Source: | arXiv, 2105.02598 | | Services: | Forum | Review | PDF | Favorites | |
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