Regensburg 2019 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 50: Poster: Nonlinear Systems, Patterns, Flows ..

DY 50.21: Poster

Donnerstag, 4. April 2019, 15:00–18:00, Poster B2

Stable subharmonic patterns in spatially modulated phase separation — •Frederik Thomsen, Mirko Ruppert, and Walter Zimmermann — Theoretische Physik I, Universität Bayreuth, Deutschland

We consider the standard continuum model for phase separation, the Cahn-Hilliard model, and investigate the effects of spatially periodic modulations of the control parameter on the onset of phase separation. We find by analytical approximations and numerical solutions a reduction of the critical value of the control parameter at the onset of modulated phase separation. In addition, we find stable spatial patterns with wavenumbers subharmonic to the modulation wavenumber.