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quant-ph2026
Two-state generator extraction: property currents and a two-layer arrow of time in pre- and post-selected quantum dynamics
Seiki Saito
Conditioning on both past and future assigns intermediate-time properties a causal observer does not; these time-symmetric assignments obey exact symmetry theorems and are measurab…
quant-ph2026
Temporal Coarse-Graining as the Origin of Macroscopic Friction in Quantum Spin Chains via Data-Driven Liouvillian Extraction
Seiki Saito
Understanding how macroscopic irreversible hydrodynamics emerges from the reversible unitary dynamics of isolated quantum many-body systems remains a central challenge. Conventiona…