The spin dynamics and the orbital dynamics in the A and B phases of superfluid $^3$He are analyzed. Attention is focused on solitons and instantons: nonsingular configurations of the field of the order parameter of the $^3$He superfluid phases. A qualitative explanation in terms of solitons and instantons is offered for several experiments involving the A and B phases of $^3$He. The analysis of these questions is prefaced by some general information on the order parameter and the free energy in superfluid $^3$He.
PACS:67.57.Lm, 67.57.Bc (all) DOI:10.1070/PU1986v029n02ABEH003163 URL: https://ufn.ru/en/articles/1986/2/e/ Citation: Rozhkov S S "Dynamics of the order parameter of superfluid phases of helium-3" Sov. Phys. Usp.29 186–198 (1986)
%0 Journal Article
%T Dynamics of the order parameter of superfluid phases of helium-3
%A S. S. Rozhkov
%I Physics-Uspekhi
%D 1986
%J Phys. Usp.
%V 29
%N 2
%P 186-198
%U https://ufn.ru/en/articles/1986/2/e/
%U https://doi.org/10.1070/PU1986v029n02ABEH003163