C. Tretter

activity

20092022

most citedEigenvalue estimates for non-selfadjoint Dirac operators on the real line

39 citations · 169 across the 20 of their papers we have counts for

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Showing 2015 · math.SPShow all

2 papers · 2 filters

math.SP2015

Approximations of spectra of Schrödinger operators with complex potentials on $R^{d}$

Sabine Bögli, Petr Siegl, Christiane Tretter

We study spectral approximations of Schrödinger operators $T = - Δ + Q$ with complex potentials on $Ω = R^{d}$ , or exterior domains $Ω \subset R^{d}$ , by domain truncation. O…

math.SP2015★ 8 cited

Analysis of the essential spectrum of singular matrix differential operators

Orif O. Ibrogimov, Petr Siegl, Christiane Tretter

A complete analysis of the essential spectrum of matrix-differential operators $A$ of the form \begin{align} \begin{pmatrix} -\displaystyle{\frac{\rm d}{\rm d t}} p \displ…

Approximations of spectra of Schrödinger operators with complex potentials on Rd

Analysis of the essential spectrum of singular matrix differential operators

Approximations of spectra of Schrödinger operators with complex potentials on $R^{d}$