Perturbative method for generalized spectral decompositions
Laura, Roberto, Castagnino, Mario, Betan, Rodolfo M.Id · RePEc: Research Papers in Economics · 1999
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.