3 papers
quant-ph2026
Relative Entropy Revivals Caused by Memory-Induced Loss of Divisibility in Classical Non-Markovian Dynamics
Koichi Nakagawa
Relative-entropy revivals and negative entropy-production rates are established signatures of memory effects in non-Markovian dynamics. The present paper addresses a more specific…
quant-ph2026
Impulsively Driven Fractional Relaxation: Exact Response, Scaling Laws, Frequency-Domain Signatures, and Memory-Induced Crossover Structures
Koichi Nakagawa
We investigate periodically impulsive fractional relaxation as a minimal model of nonlocal dissipative dynamics under repeated external stimulation. The free relaxation law is clas…
cond-mat.stat-mech2026
Mean-Correlation Reconstruction of Forward Dissipation and Non-Markovian Reverse Flow in a Trajectory-Resolved Thermo-Field Two-Spin Model
Koichi Nakagawa
We develop a trajectory-resolved extension of the thermo-field entanglement description for a minimal dissipative two-spin system. For the isolated exchange-coupled model, the intr…