Spontaneous Symmetry Breaking in Superfluid Helium-4

Details Spontaneous Symmetry Breaking in Superfluid Helium-4 Spontaneous Symmetry Breaking in Superfluid Helium-4

2007-01-16

arxiv.org/abs/cond-mat/0701365v2

Phys. Lett. A 367 (2007) 489-492

Physics

Condensed Matter

Other Condensed Matter

4 pages, 5 figures; v2 typos corrected, a reference added

Scientific paper

10.1016/j.physleta.2007.03.041

We derive an analytical expression for a critical temperature of spontaneous symmetry breaking in a repulsive hard-core interacting Bose system. We show that the critical temperature of spontaneous symmetry breaking in a hard-core interacting Bose system is determined by the three physical parameters: the density of Bose liquid at absolute zero (rho_0), the mass (m) and the hard sphere diameter (sigma) of a boson. The formula that we have derived is Tc = rho_0 pi hbar^2 sigma / m^2 kB. We report Tc of liquid helium-4 is 2.194 K, which is significantly close to the lambda temperature of 2.1768 K. The deviation between the predicted and experimental values of the lambda temperature is less than 1%.

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