2021
DOI: 10.48550/arxiv.2112.09000
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Generalized entanglement entropies in two-dimensional conformal field theory

Sara Murciano,
Pasquale Calabrese,
Robert M. Konik

Abstract: We introduce and study generalized Rényi entropies defined through the traces of products of Tr B (|Ψ i Ψ j |) where |Ψ i are eigenstates of a two-dimensional conformal field theory (CFT). When |Ψ i = |Ψ j these objects reduce to the standard Rényi entropies of the eigenstates of the CFT. Exploiting the path integral formalism, we show that the second generalized Rényi entropies are equivalent to four point correlators. We then focus on a free bosonic theory for which the mode expansion of the fields allows us… Show more

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