Numerically exact TEMPO simulations of the spin-boson model with negative spectral exponents reveal a coherent-to-pseudo-coherent crossover with no incoherent regime, and yield an empirical formula for the zero-temperature dephasing rate.
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Quantum $1/f^\eta$ Noise Induced Relaxation in the Spin-Boson Model
Numerically exact TEMPO simulations of the spin-boson model with negative spectral exponents reveal a coherent-to-pseudo-coherent crossover with no incoherent regime, and yield an empirical formula for the zero-temperature dephasing rate.