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math.SP2007
Pushnitski's -invariant and Schrödinger operators with embedded eigenvalues
Nurulla Azamov
In this note, under a certain assumption on an affine space of operators, which admit embedded eigenvalues, it is shown that the singular part of the spectral shift function of any…
math.SP2007★ 7 cited
Infinitesimal spectral flow and scattering matrix
Nurulla Azamov
In this note the notion of infinitesimal scattering matrix is introduced. It is shown that under certain assumption, the scattering operator of a pair of trace compatible operators…