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hep-th2024
Smooth Perturbations to Rényi Entropy
Andrew Buchanan
A method is presented for computing the Rényi entropy of a perturbed massless vacuum on the ball via a comparison with lattice field theory. If the perturbed state is Gaussian with…
hep-th2023
Perturbative Method for Mutual Information and Thermal Entropy of Scalar Quantum Fields
Joseph Bramante, Andrew Buchanan
A new approach is presented to compute entropy for massless scalar quantum fields. By perturbing a skewed correlation matrix composed of field operator correlation functions, the m…