Yoshiki Hidaka* and Shoichi Kai
Faculty of Engineering, Kyushu University, Fukuoka 819-0395, Japan
*E-mail address: firstname.lastname@example.org
(Received March 13, 2010; Accepted March 27, 2010)
Abstract. It is well known that the Nambu-Goldstone (NG) mode accompanying spontaneous breaking of a continuous symmetry plays important roles in subatomic physics and in condensed-matter physics. Very recently new aspect has been discovered in nonlinear hydrodynamic systems related to NG modes. Here we introduce such a typical but, up to now, unique example which is observed in electroconvection in liquid crystals. The nonlinear interaction between the Nambu-Goldstone mode and the convective one induces a new type of spatiotemporal chaos, the so-called soft-mode turbulence.
Keywords: Spontaneous Breaking of Symmetry, Nambu-Goldstone Mode, Spatiotemporal Chaos, Soft-Mode Turbulence