Entanglement Entropy and Causal Set Theory
arXiv:2212.13586 · doi:10.1007/978-981-19-3079-9_83-1
Abstract
We review a formulation of the entanglement entropy of a quantum scalar field in terms of its spacetime two-point correlation functions. We discuss applications of this formulation to studying entanglement entropy in various settings in causal set theory. These settings include sprinklings of causal diamonds in various dimensions in flat spacetime, de Sitter spacetime, massless and massive theories, multiple disjoint regions, and nonlocal quantum field theories.
arXiv commentInvited chapter for the Causal Sets section of the Handbook of Quantum Gravity (Eds. C. Bambi, L. Modesto and I. L. Shapiro, Springer, expected in 2023)
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