In an interacting spin chain coupled to an empty reservoir, the system-reservoir entanglement grows, peaks, and decays like a Page curve, with growth exponents that depend on the initial state and on whether the bath is interacting.
(1)] and Sz sys = ∑0 i=−(LS−1) Sz i are the Hamiltonian and the total magnetization of the system
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Page curve like dynamics in Interacting Quantum Systems
In an interacting spin chain coupled to an empty reservoir, the system-reservoir entanglement grows, peaks, and decays like a Page curve, with growth exponents that depend on the initial state and on whether the bath is interacting.