Critical phenomenon of the order-disorder transition in incompressible active fluids
Critical phenomenon of the order-disorder transition in incompressible active fluids
复制标题
不可压缩活性流体有序-无序转变的关键现象
DOI:
10.1088/1367-2630/17/4/042002
复制
发表时间:
2015-04-02
影响因子:
3.3
通讯作者:
Lee, Chiu Fan
中科院分区:
文献类型:
--
作者:
Chen, Leiming;Toner, John;Lee, Chiu Fan
We study incompressible systems of motile particles with alignment interactions. Unlike their compressible counterparts, in which the order-disorder (i.e., moving to static) transition, tuned by either noise or number density, is discontinuous, in incompressible systems this transition can be continuous, and belongs to a new universality class. We calculate the critical exponents to O (epsilon) in an epsilon = 4 - d expansion, and derive two exact scaling relations. This is the first analytic treatment of a phase transition in a new universality class in an active system.