DOI: https://doi.org/10.30970/jps.01.551
THE PROBLEM OF THE ‟CHARGE” Q(4) = div vs FOR SUPERFLUID VELOCITY IN CASE OF BOSE SYSTEMS
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Journal of Physical Studies 1(4), 551–553 (1997)
DOI: https://doi.org/10.30970/jps.01.551 THE PROBLEM OF THE ‟CHARGE” Q(4) = div vs FOR SUPERFLUID VELOCITY IN CASE OF BOSE SYSTEMS |
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Z. M. Galasiewicz
Institute of Theoretical Physics, University of Wrocław
Pl. Maksa Borna 9, 50-204 Wrocław, Poland
and
Institute of Low Temperatures and Structure Research
of the Polish Academy of Sciences, Wrocław, Poland
The relation div ${\bf v}_s(t,{\bf r})=Q^{(4)}(t,{\bf r})\to -Q^{(4)}(-t,{\bf r})$ is considered for superfluid helium 4 and weakly interacting Bose gas. In respect to the latter it was shown that $Q^{(4)}$ is expressed in terms of the phase $χ$. It characterizes the order parameter $\langle ψ\rangle=\sqrt{ρ_c}e^{iχ}$ as a consequence of the broken gauge symmetry. So, similarly to the Josephson effect the phase has here significance.