“…We believe that this assumption is justified because the collective modes of the vortex lattice are quite well understood [9] and are not excited in the mutual friction experiments. In 3 He-B, d Ќ varies smoothly from approximately zero at the lowest temperatures to one at T c , and also the nonzero d Ќ has been shown to account for the observed shape of the free surface of the liquid in rotation experiments [10]. In 3 He-A, d Ќ is indistinguishable from one over the whole temperature range where the A phase is stable in zero field.…”
“…We believe that this assumption is justified because the collective modes of the vortex lattice are quite well understood [9] and are not excited in the mutual friction experiments. In 3 He-B, d Ќ varies smoothly from approximately zero at the lowest temperatures to one at T c , and also the nonzero d Ќ has been shown to account for the observed shape of the free surface of the liquid in rotation experiments [10]. In 3 He-A, d Ќ is indistinguishable from one over the whole temperature range where the A phase is stable in zero field.…”
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