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

Demetra Psiachos, Nikos Lazarides, G. P. Tsironis

    Research output: Contribution to journalArticlepeer-review

    9 Scopus citations


    (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 languageBritish English
    Pages (from-to)663-672
    Number of pages10
    JournalApplied Physics A: Materials Science and Processing
    Issue number2
    StatePublished - 9 Oct 2014


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