21 citations · 89 across the 16 of their papers we have counts for
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math-ph2008★ 3 cited
The method of the weakly conjugate operator: Extensions and applications to operators on graphs and groups
M. Mantoiu, S. Richard, R. Tiedra de Aldecoa
In this review we present some recent extensions of the method of the weakly conjugate operator. We illustrate these developments through examples of operators on graphs and groups…
math-ph2008
Time delay for dispersive systems in quantum scattering theory. I. The Friedrichs model
Rafael Tiedra de Aldecoa
We present a method for proving the existence of time delay (defined in terms of sojourn times) as well as its identity with Eisenbud-Wigner time delay in the case of the Friedrich…