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2001

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/10496

High-momentum dynamic structure function of liquid 3He-4He mixtures: A microscopic approach

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http://dx.doi.org/10.1103/PhysRevB.63.054521

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.

Subject

Microscòpia de materials, Heli líquid

Subject (English)

Microscopy of materials, Liquid helium

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Articles publicats en revistes (Física Quàntica i Astrofísica)

Citation

MAZZANTI CASTRILLEJO, Ferran, POLLS MARTÍ, Artur and BORONAT MEDICO, Jordi. High-momentum dynamic structure function of liquid 3He-4He mixtures: A microscopic approach. Physical Review B. 2001. Vol. 63, num. 5, pags. 054521(1)-054521(11). ISSN 0163-1829. [consulted: 11 of August of 2026]. Available at: https://hdl.handle.net/2445/10496

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