In a minimal two-qubit nonequilibrium heat transport model, exceptional points arise in local master equations and associated non-Hermitian Hamiltonians but not in global ones, with hybrid bath treatments interpolating between the regimes.
Schmidt, Quantum thermodynamics of the resonant-level model with driven system-bath coupling, Phys
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Local and Global Master Equations through the Lens of Non-Hermitian Physics
In a minimal two-qubit nonequilibrium heat transport model, exceptional points arise in local master equations and associated non-Hermitian Hamiltonians but not in global ones, with hybrid bath treatments interpolating between the regimes.