Directed percolation criticality in turbulent liquid crystals
Directed percolation criticality in turbulent liquid crystals
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DOI：
10.1103/physrevlett.99.234503
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发表时间：
2007-12-07
影响因子：
8.6
通讯作者：
Sano, Masaki
中科院分区：
文献类型：
--
作者：
Takeuchi, Kazumasa A.;Kuroda, Masafumi;Sano, Masaki
实验研究了双折射液晶中电流体动力学对流的两种不同拓扑湍流状态之间的相变临界行为。仔细确定所观察到的时空不稳定性制度的统计特性，产生一套完整的静态临界指数与那些定义的定向渗流类在2+1维完全一致。这构成了第一个明确的和全面的实验证据的吸收相变在这个突出的非平衡普适类。
We experimentally investigate the critical behavior of a phase transition between two topologically different turbulent states of electrohydrodynamic convection in nematic liquid crystals. The statistical properties of the observed spatiotemporal intermittency regimes are carefully determined, yielding a complete set of static critical exponents in full agreement with those defining the directed percolation class in 2+1 dimensions. This constitutes the first clear and comprehensive experimental evidence of an absorbing phase transition in this prominent nonequilibrium universality class.