Boundary-induced instabilities in coupled oscillators.
Phys Rev Lett
; 112(13): 134101, 2014 Apr 04.
Article
in En
| MEDLINE
| ID: mdl-24745424
ABSTRACT
A novel class of nonequilibrium phase transitions at zero temperature is found in chains of nonlinear oscillators. For two paradigmatic systems, the Hamiltonian XY model and the discrete nonlinear Schrödinger equation, we find that the application of boundary forces induces two synchronized phases, separated by a nontrivial interfacial region where the kinetic temperature is finite. Dynamics in such a supercritical state displays anomalous chaotic properties whereby some observables are nonextensive and transport is superdiffusive. At finite temperatures, the transition is smoothed, but the temperature profile is still nonmonotonic.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Oscillometry
/
Models, Theoretical
Language:
En
Journal:
Phys Rev Lett
Year:
2014
Document type:
Article