Directed percolation criticality in turbulent liquid crystals

Details Directed percolation criticality in turbulent liquid crystals Directed percolation criticality in turbulent liquid crystals

2007-06-28

arxiv.org/abs/0706.4151v1

Phys. Rev. Lett. 99, 234503 (2007).

Physics

Condensed Matter

Statistical Mechanics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.99.234503

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 non-equilibrium universality class.

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