Herbert Spohn – Technical University Munich
Date/Time/Location
Thursday, April 24th, 2025, 12:10 pm; Hill Center 705
Universality classes for coupled Kardar-Parisi-Zhang equations
Considered is the KPZ equation with two components, constrained to be symmetric under exchange. This model is of interest in the context of exciton-polaritons condensates. A central issue is to understand the phase diagram. We argue that, as for the single component, the static scaling exponent is 1/2 and the dynamic scaling exponent is 3/2. More surprisingly, the three-dimensional parameter space is foliated into two-dimensional universality classes.
This is joint work with A. Dhar, M. Kulkarni, D. Roy, ICTS Bangalore.