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Nuclear Theory Seminar

Thu, Oct 14, 2021 11:00 am - 12:30 pm
PSC 2136


Speaker: Niklas Mueller, UMD

Title: Thermalization of Gauge Theories from their Entanglement Spectrum

Abstract: Using dual theories embedded into a larger unphysical Hilbert space along entanglement cuts, we study the Entanglement Structure of Z2Z lattice gauge theory in (2+1)(2+1) spacetime dimensions. We find that Li and Haldane's conjecture holds for gauge theories, and show consistency of the Entanglement Hamiltonian with the Bisognano-Wichmann theorem. Studying non-equilibrium dynamics after a quench, we provide a complete description of thermalization in Z2Z gauge theory which proceeds in a characteristic sequence: Maximization of the Schmidt rank and spreading of level repulsion at early times, self-similar evolution with scaling coefficients α=0.8±0.1α=0.8±0.1 and β=0.05±0.03β=0.05±0.03 at intermediate times, and finally thermal saturation of the von Neumann entropy.

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