Pseudo PT symmetric lattice
arXiv:1411.3459 · doi:10.1140/epjd/e2014-50652-x
Abstract
We study pseudo PT symmetry for a tight binding lattice with a general form of the modulation. Using high-frequency Floquet method, we show that the critical non-Hermitian degree for the reality of the spectrum can be manipulated by varying the parameters of the modulation. We study the effect of periodical and quasi-periodical nature of the modulation on the pseudo PT symmetry.
To appear Eur. Phys. J. D
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