Simulations of an isolated, interacting Bose gas show that tracing out unmeasured degrees of freedom creates an effective bath, driving entanglement entropy and observables to thermal values in a bi-exponential way.
Quantum statistical mechanics in a closed system
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Measurement-Induced Dynamical Quantum Thermalization
Simulations of an isolated, interacting Bose gas show that tracing out unmeasured degrees of freedom creates an effective bath, driving entanglement entropy and observables to thermal values in a bi-exponential way.