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quant-ph2026
Fundamental bound on Wigner negativity generation from environmental collisions
Isaac Layton, Takahiro Sagawa, Ken Funo
Beyond quadratic potentials, classical evolution laws are typically thought to arise from quantum theory as an approximate description. Here we show that classical evolution laws c…
quant-ph2026
Fixing semi-classical physics from first principles: how to derive effective classical-quantum dynamics from open quantum theory
Isaac Layton
Semi-classical approaches approximate fully quantum descriptions with partially classical ones. Here we use a toy model to highlight the failings of the standard mean-field semi-cl…