Pseudo PT symmetric lattice

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Yuce C.

EUROPEAN PHYSICAL JOURNAL D, vol.69, no.1, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 69 Issue: 1
  • Publication Date: 2015
  • Doi Number: 10.1140/epjd/e2014-50652-x
  • Journal Name: EUROPEAN PHYSICAL JOURNAL D
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anadolu University Affiliated: No

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.