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High-momentum dynamic structure function of liquid 3He-4He mixtures: a microscopic approach | | F. Mazzanti
; A. Polls
; J. Boronat
; | | Date: |
24 Oct 2000 | | Subject: | Statistical Mechanics | cond-mat.stat-mech | | Abstract: | The high-momentum dynamic structure function of liquid 3He-4He mixtures has been studied introducing final state effects. Corrections to the impulse approximation have been included using a generalized Gersch-Rodriguez theory that properly takes into account the Fermi statistics of 3He atoms. The microscopic inputs, as the momentum distributions and the two-body density matrices, correspond to a variational (fermi)-hypernetted chain calculation. The agreement with experimental data obtained at $q=23.1$ AA$^{-1}$ is not completely satisfactory, the comparison being difficult due to inconsistencies present in the scattering measurements. The significant differences between the experimental determinations of the 4He condensate fraction and the 3He kinetic energy, and the theoretical results, still remain unsolved. | | Source: | arXiv, cond-mat/0010361 | | Services: | Forum | Review | PDF | Favorites | |
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