Physics – Mathematical Physics
Scientific paper
2009-01-19
SIGMA 5 (2009), 007, 24 pages
Physics
Mathematical Physics
Scientific paper
10.3842/SIGMA.2009.007
In this paper, we develop spectral analysis of a discrete non-Hermitian
quantum system that is a discrete counterpart of some continuous quantum
systems on a complex contour. In particular, simple conditions for discreteness
of the spectrum are established.
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