(formula presented)-symmetric dimers with time-periodic gain/loss function

Demetra Psiachos, Nikos Lazarides, G. P. Tsironis

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

(formula presented)-symmetric dimers with a time-periodic gain/loss function in a balanced configuration where the amount of gain equals that of loss are investigated analytically and numerically. Two prototypical dimers in the linear regime are investigated: a system of coupled classical oscillators, and a Schrödinger dimer representing the coupling of field amplitudes, each system representing a wide class of physical models. Through a thorough analysis of their stability behavior, we find that turning on the coupling parameter in the classical dimer system leads initially to decreased stability but then to re-entrant transitions from the exact to the broken (formula presented)-phase and vice versa, as it is increased beyond a critical value. On the other hand, the Schrödinger dimer behaves more like a single oscillator with time-periodic gain/loss. In addition, we are able to identify the conditions under which the behavior of the two dimer systems coincides and/or reduces to that of a single oscillator.

Original languageEnglish
Pages (from-to)663-672
Number of pages10
JournalApplied Physics A: Materials Science and Processing
Volume117
Issue number2
DOIs
Publication statusPublished - Oct 9 2014

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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