Decays of degeneracies in PT-symmetric ring-shaped lattices

0374529 - ÚJF 2012 RIV NL eng J - Článek v odborném periodiku
Znojil, Miloslav
Decays of degeneracies in PT-symmetric ring-shaped lattices.
Physics Letters. A. Roč. 375, č. 39 (2011), s. 3435-3441. ISSN 0375-9601. E-ISSN 1873-2429
Grant CEP: GA ČR GAP203/11/1433
Výzkumný záměr: CEZ:AV0Z10480505
Klíčová slova: NON-HERMITIAN HAMILTONIANS * quantum-mechanics * OBSERVABILITY
Kód oboru RIV: BE - Teoretická fyzika
Impakt faktor: 1.632, rok: 2011

Many apparently non-Hermitian ring-shaped discrete lattices share the appeal with their more popular linear predecessors. Irrespectively of the change of the topology, their dynamics controlled by the nearest-neighbor interaction is shown to remain phenomenologically interesting. For the perturbation-caused removals of spectral degeneracy at exceptional points, in particular, alternative scenarios are illustrated via solvable examples. (C) 2011 Elsevier B.V. All rights reserved.
Trvalý link: http://hdl.handle.net/11104/0207432