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Chapter 11 Superfluidity as a Subsequence of Ordering of Zero-Point Oscillations
Table 11.1
Comparison of the calculated values of liquid helium-4 with the measurement data.
parameter defining formula calculated value measured value
the velocity of zero-point
oscillations of ̂v 0 = cα 3 116.5
helium atom
The density of atoms
√
in liquid n =
M 4 α 2
2m e a 3 B
m/s
2.172 · 10 22
helium atom/cm 3
The density
of liquid helium-4 γ = M 4n 144.3 145 T ≃Tλ
g/l
The dielectric 1.048 T ≃4.2
√
ε−1
constant
= 4π ε+2 3 α2 M 4
2m e
1.040
of liquid helium-4
1.057 T ≃Tλ
The temperature
T λ ≃ M 4c 2 α 6
3
2.177 2.172
λ-point,K
The boiling
temperature T boil ≃ 2T λ 4.35 4.21
of helium-4,K
The first sound
velocity, c s1 = 2 ̂v 0 233 238.3 T →0
m/s
Science Publishing Group 115