21 citations · 89 across the 16 of their papers we have counts for
Showing 2006Show all
3 papers · 1 filter
math-ph2006
On the spectrum of magnetic Dirac operators with Coulomb-type perturbations
Serge Richard, Rafael Tiedra de Aldecoa
We carry out the spectral analysis of singular matrix valued perturbations of 3-dimensional Dirac operators with variable magnetic field of constant direction. Under suitable assum…
math-ph2006★ 16 cited
Generalized definition of time delay in scattering theory
C. Gerard, R. Tiedra de Aldecoa
We advocate for the systematic use of a symmetrized definition of time delay in scattering theory. In two-body scattering processes, we show that the symmetrized time delay exists…
math-ph2006★ 18 cited
Spectral analysis for adjacency operators on graphs
M. Mantoiu, S. Richard, R. Tiedra de Aldecoa
We put into evidence graphs with adjacency operator whose singular subspace is prescribed by the kernel of an auxiliary operator. In particular, for a family of graphs called admis…