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Decoherence Versus the Idealization of Microsystems as Correlation Carriers Between Macrosystems
Ludovico Lanz, Bassano Vacchini
It is argued that the appropriate framework to describe a microsystem as a correlation carrier between a source and a detector is non-equilibrium statistical mechanics for the comp…
Complete positivity and subdynamics in quantum field theory
B. Vacchini
The relevance that the property of complete positivity has had in the determination of quantum structures is briefly reviewed, together with recent applications to neutron optics a…
Time Scale and Completely Positive Dynamical Evolutions
B. Vacchini
It is argued that in the description of macroscopic systems inside quantum mechanics the study of the dynamics of selected degrees of freedom slowly varying on a suitable time scal…
Dissipative Systems and Objective Description: Quantum Brownian Motion as an Example
Bassano Vacchini
A structure of generator of a quantum dynamical semigroup for the dynamics of a test particle interacting through collisions with the environment is considered, which has been obta…
Non-Abelian linear Boltzmann equation and quantum correction to Kramers and Smoluchowski equation
Bassano Vacchini
A quantum linear Boltzmann equation is proposed, constructed in terms of the operator-valued dynamic structure factor of the macroscopic system the test particle is interacting wit…
Quantum optical versus quantum Brownian motion master-equation in terms of covariance and equilibrium properties
Bassano Vacchini
Structures of quantum Fokker-Planck equations are characterized with respect to the properties of complete positivity, covariance under symmetry transformations and satisfaction of…