Perturbative method for generalized spectral decompositions
Roberto Laura, Mario Castagnino, Rodolfo M. Id Betan
Abstract
Imposing analytic properties to states and observables we construct a perturbative method to obtain a generalized biorthogonal system of eigenvalues and eigenvectors for quantum unstable systems. A decay process can be described using this generalized spectral decomposition, and the final generalized state is obtained.
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