Fluctuating Membranes with Tilt Order

Дата и время публикации : 1995-04-19T15:37:54Z

Авторы публикации и институты :
Thomas Powers
Philip Nelson

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 13 pages; print this using plain TeX
Первичная категория: cond-mat

Все категории : cond-mat, hep-th

Краткий обзор статьи: Thermal fluctuations are important for amphiphilic bilayer membranes since typical bending stiffnesses can be a few $k_B T$. The rod-like constituent molecules are generically tilted with respect to the local normal for packing reasons. We study the effects of fluctuations on membranes with nematic order, a simplified idealization with the same novel features as realistic tilt order. We find that nematic membranes lie in the same universality class as hexatic membranes, {it i.e.} the couplings that distinguish nematic from hexatic order are marginally irrelevant. Our calculation also illustrates the advantages of conformal gauge, which brings great conceptual and technical simplifications compared to the more popular Monge gauge.

Category: Physics