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Gamow Functionals on Operator Algebras
M. Castagnino, M. Gadella, R. Id Betan +1
We obtain the precise form of two Gamow functionals, representing the exponentially decaying part of a quantum resonance and its mirror image that grows exponentially, as a linear,…
Functional approach to quantum decoherence and the classical final limit II: the pointer basis and the quantum measurements
M. Castagnino, R. Laura, R. Id Betan
A quantum system with discrete and continuos evolution spectrum is studied. A final pointer basis is found, that can be defined in a presised mathematical way. This result is use t…
Decoherence and the Final Pointer Basis
Mario Castagnino, Roberto Laura
Using a functional method it is demonstrated that a generic quantum system evolves to a decohered state in a final pointer basis.
Scattering and intrinsic irreversibility
R. Laura
The formalism of quantum systems with diagonal singularities is applied to describe scattering processes. Well defined states are obtained for infinite time, which are related to a…
Subdynamics theory in the functional approach to quantum mechanics
Roberto Laura, Rodolfo M. Id Betan
The formalism of subdynamics is extended to the functional approach of quantum systems, and used for the Friedrichs model, in which diagonal singularities in states and observables…
Minimal Irreversible Quantum Mechanics
Mario Castagnino, Roberto Laura
It is demonstrated that, making minimal changes in ordinary quantum mechanics, a reasonable irreversible quantum mechanics can be obtained. This theory has a more general spectral…