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math.SP2020
On Compressed Resolvents of Schrödinger Operators with Complex Potentials
Jussi Behrndt
The compression of the resolvent of a non-self-adjoint Schrödinger operator onto a subdomain is expressed in a Krein-Naimark type formula, where the Di…
math.SP2020★ 4 cited
The Generalized Birman-Schwinger Principle
J. Behrndt, A. F. M. ter Elst, F. Gesztesy
We prove a generalized Birman-Schwinger principle in the non-self-adjoint context. In particular, we provide a detailed discussion of geometric and algebraic multiplicities of eige…