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quant-ph2026
Van der Waals interaction at short and long distances: a pedagogical path from stationary to time-dependent perturbation theory
L. Saba, C. D. Fosco
The van der Waals interaction between neutral atoms is typically studied using stationary perturbation theory for the short-distance (London) limit, while long-distance (Casimir-Po…
quant-ph2026
Non-coherent evolution of closed weakly interacting system leads to equidistribution of probabilities of microstates
A. P. Meilakhs
We introduce a concept of non-coherent evolution of macroscopic quantum systems. We show that for weakly interacting systems such evolution is a Markovian stochastic process. The t…