Exact asymptotic wavefunction for arbitrary spin s in the time-dependent Richardson-Gaudin model is derived independently per spin size, yielding a non-thermal steady state outside the natural GGE with mean-field exact for finite products of distinct-site spin operators.
For non-integrable couplings of the form g(t) ∝ 1/tα, α ̸= 1, the local magnetization exhibit a de- pendence on ε, as we demonstrate in Fig
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Higher spin Richardson-Gaudin model with time-dependent coupling: Exact dynamics
Exact asymptotic wavefunction for arbitrary spin s in the time-dependent Richardson-Gaudin model is derived independently per spin size, yielding a non-thermal steady state outside the natural GGE with mean-field exact for finite products of distinct-site spin operators.