Interface fluctuations under shear.
Coarsening systems under uniform shear display a long time regime characterized by the presence of highly stretched and thin domains. The question then arises whether thermal fluctuations may actually destroy this layered structure. To address this problem in the case of nonconserved dynamics, we study an anisotropic version of the Burgers equation, constructed to describe thermal fluctuations of an interface in the presence of a uniform shear flow. As a result, we find that stretched domains are only marginally stable against thermal fluctuations in d=2, whereas they are stable in d=3.
Bray
A J
AJ
Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom.
Cavagna
A
A
Travasso
R D
RD