TY - JOUR
T1 - A nonequilibrium temperature and fluctuation theorem for soft-mode turbulence
AU - Hidaka, Yoshiki
AU - Hosokawa, Yusaku
AU - Oikawa, Noriko
AU - Tamura, Koyo
AU - Anugraha, Rinto
AU - Kai, Shoichi
N1 - Funding Information:
This study was supported by Grant-in-Aids for Scientific Research (Nos. 17340119, 20111003, 21340110 and 21540391) from The Ministry of Education, Culture, Sport, Science, and Technology of Japan and The Japan Society for the Promotion of Science (JSPS).
PY - 2010/6/1
Y1 - 2010/6/1
N2 - Non-thermal Brownian motion of a particle for soft-mode turbulence (SMT) in the electroconvection of a nematic liquid crystal has been experimentally investigated to clarify the statistical and thermodynamical aspects of SMT, using the Lagrangian picture in hydrodynamics. The effective temperature for SMT is obtained in two different ways based on the Einstein relation and the fluctuation theorem from the diffusion due to non-thermal particle fluctuations. The temperatures from the two methods agree well and exhibit a high value of 106 K. They depend on the coarse-graining time, which reflects the anomalous properties of the macroscopic fluctuations for the SMT.
AB - Non-thermal Brownian motion of a particle for soft-mode turbulence (SMT) in the electroconvection of a nematic liquid crystal has been experimentally investigated to clarify the statistical and thermodynamical aspects of SMT, using the Lagrangian picture in hydrodynamics. The effective temperature for SMT is obtained in two different ways based on the Einstein relation and the fluctuation theorem from the diffusion due to non-thermal particle fluctuations. The temperatures from the two methods agree well and exhibit a high value of 106 K. They depend on the coarse-graining time, which reflects the anomalous properties of the macroscopic fluctuations for the SMT.
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U2 - 10.1016/j.physd.2009.07.003
DO - 10.1016/j.physd.2009.07.003
M3 - Article
AN - SCOPUS:77949486175
SN - 0167-2789
VL - 239
SP - 735
EP - 738
JO - Physica D: Nonlinear Phenomena
JF - Physica D: Nonlinear Phenomena
IS - 11
ER -