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quant-ph2026
Quantum instanton approach to metastable collective spin systems: Numerical implementation and applications
Maciej Chudak, Massimiliano Esposito, Krzysztof Ptaszynski
Driven-dissipative collective spin systems can host several long-lived metastable states; rare switching between them governs slow relaxation and first-order dissipative phase tran…
quant-ph2026
Quantum instanton theory for metastable collective spin systems
Krzysztof Ptaszynski, Maciej Chudak, Massimiliano Esposito
Collective spin systems -- driven-dissipative spin ensembles whose unitary and dissipative processes act uniformly on all spins, allowing their dynamics to be described as a single…