DYNAMIC FLUCTUATION EFFECTS IN SOAP FILMS

Dynamic fluctuation phenomena in free-standing soap films are investig ated. It is shown that the squeezing mode (where the water is pumped b ack and forth) induces contributions to kinetic coefficients (viscosit y and diffusion) which are divergent at the intermediate scales, leadi ng to anomalous scaling behavior of the coefficients. The correspondin g exponents are calculated using RG methods in the one-loop approximat ion. They are epsilon/19 and 18epsilon/19 where epsilon=4-d, and d is the dimensionality of the space (the physical value being d=2). The ro le of bending fluctuations is also discussed.