The Rotational Structure of Molecules In the Quantum He4 and He3 Liquids
arXiv:cond-mat/9906220 · doi:10.1103/PhysRevLett.83.3458
Abstract
It is shown that the drastic distinction in the rotational structure of molecules in the He4 and He3 liquids observed in [1] is due to the difference in the spectral density of excitations regardless of the hydrodynamic properties. The large width of rotational levels in the He3 is determined by particle-hole excitations whereas the small density of phonon excitations results only in the small broadening of levels in the He4.
RevTex, 4 pages, corrected some typos
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