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Time evolution of entanglement entropy after quenches in two-dimensional free fermion systems: A dimensional reduction treatment
We study the time evolution of the R\'enyi entanglement entropies following a quantum quench in a two-dimensional (2D) free fermion system. By employing dimensional reduction, we effectively transform the 2D problem into decoupled chains, a technique applicable when the system exhibits translational invariance in one direction. Various initial configurations are …