A second order smectic A-smectic C phase transition in a 3D space has been analyzed by the renorm-group technique. The Frank moduli considered in the one-loop approximation have been shown to remain stable, which is valid for the region 7ln(103/τ)102 (τ is the dimensionless vicinity to the...

Effects due to interaction of long-wave fluctuations are studied. The distribution function for fluctuating quantities, making it possible to calculate their correlation functions, is derived. Due to an increasing number of variables, the distribution function is reduced to a form necessary for...