Title
Spectral And Transport Properties Of The Pt-Symmetric Dimer Model
Keywords
Dimers; PT-symmetry; Scattering
Abstract
We study the scattering properties of the PT-symmetric tight-binding model with balanced gain and loss parameters. Our main interest is to establish the link between the spectral properties of scattering states and transport characteristics for the case of non-equal couplings between gain/loss sites. The analytical approach we have used allows one to reveal a quite unexpected role of this set-up in comparison with that of equal couplings. In particular, we demonstrate that for the exceptional points characterized by equal eigenvalues of the transfer matrix, the transmission coefficient can be different from one in contrast with the model with equal couplings. The analytical results are complemented by the numerical data.
Publication Date
8-1-2015
Publication Title
Physica E: Low-Dimensional Systems and Nanostructures
Volume
72
Number of Pages
7-16
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1016/j.physe.2015.04.010
Copyright Status
Unknown
Socpus ID
84928498475 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/84928498475
STARS Citation
Vázquez-Candanedo, O.; Izrailev, F. M.; and Christodoulides, D. N., "Spectral And Transport Properties Of The Pt-Symmetric Dimer Model" (2015). Scopus Export 2015-2019. 35.
https://stars.library.ucf.edu/scopus2015/35