A Ratio of the Shear Viscosity to the Density of Entropy for Helium

  • V. G. Bar’yakhtar Institute for Magnetism, Nat. Acad. of Sci. of Ukraine
  • E. D. Belokolos Institute for Magnetism, Nat. Acad. of Sci. of Ukraine
  • O. N. Golubeva Peoples’ Friendship University of Russia
  • A. D. Sukhanov Joint Institute for Nuclear Research
Keywords: Helium, ratio of the shear viscosity to the density of entropy, Kovtun–Son–Starinets inequality


We have studied the ratio (n/s) of the shear viscosity n to the density of entropy s for helium as a function of the temperature and have established that the minimal value, (n/s)min, satisfies the Kovtun–Son–Starinets inequality, (n/s)min ≥ (h/4пkB).


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How to Cite
Bar’yakhtar, V., Belokolos, E., Golubeva, O., & Sukhanov, A. (2018). A Ratio of the Shear Viscosity to the Density of Entropy for Helium. Ukrainian Journal of Physics, 59(2), 155. https://doi.org/10.15407/ujpe59.02.0155
Solid matter