期刊
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
卷 48, 期 5, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1751-8113/48/5/055101
关键词
Stokes variables; AC-dimers; dynamics; PT-symmetry
资金
- Division Of Mathematical Sciences
- Direct For Mathematical & Physical Scien [1312856] Funding Source: National Science Foundation
In the present work, we generalize the setting of dimers with potential gain and loss which have been extensively considered recently in PT-symmetric contexts. We consider a pair of waveguides which are evanescently coupled but may also be coupled in a way inducing gain/loss and may additionally possess onsite gain and loss, as well as (possibly non-uniform) nonlinearity. We identify (and where appropriate review from earlier work) a plethora of interesting dynamical scenarios ranging from the existence of stable and unstable fixed points and integrable dynamics, to the emergence of pitchfork or Hopf bifurcations and the generation of additional fixed points and limit cycles, respectively, as well as the potential deviation of trajectories to infinity. Thus, a catalogue of a large number of possible cases is given and their respective settings physically justified (where appropriate).
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