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General Galilei Covariant Gaussian Maps

A new paper by G. Gasbarri, M. Toros and A. Bassi has been published in Physical Review Letters. The authors analyze Galilean symmetries in non-Markovian Gaussian Completely positive maps.

They provide the specific mathematical structure that Completely Positive Gaussian Maps should have in order to satisfy Galilean symmetries.

Next they apply the results to discussing measures of macroscopicity based on classicalization maps, specifically addressing dissipation, Galilean covariance and non-Markovianity.
In the Letter they further propose a possible generalization of macroscopicity measure first defined by Nimmrichter and Hornberger.

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