Experimental Study on Threshold Shifts and Structure Changes Due to External Multiplicative Noise in Nematic Liquid Crystal

Abstract

The multiplicative stochastic process is studied in the electrohydrodynamics of nematic liquid crystal. The dependence of the threshold for the first instability on noise intensity is not monotonous and shows three bends suggesting the change of the noise dependence due to the onset of different spatial structures. This dependence is drastically varied by changing the correlation time of noise.