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hep-th2026
Determination of thermodynamics from entanglement entropy in the finite-density O(N) model
Niko Jokela, Aatu Rajala, Tobias Rindlisbacher
We nonperturbatively compute Rényi entropies for strip-shaped subregions in the three-dimensional O(4) model at finite density on the lattice. By using a dual variable representati…
hep-th2026
Thermal and chemical response from entanglement entropy
Niko Jokela, Aatu Rajala, Tobias Rindlisbacher
We study entanglement entropy (EE) in interacting quantum field theories (QFTs) at finite density. We argue that, in the limit of large subregions, the derivative of EE with respec…