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High-Momentum Response of Liquid 3He

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A final-state-effects formalism suitable to analyze the high-momentum response of Fermi liquids is presented and used to study the dynamic structure function of liquid 3He. The theory, developed as a natural extension of the Gersch-Rodriguez formalism, incorporates the Fermi statistics explicitly through a new additive term which depends on the semidiagonal two-body density matrix. The use of a realistic momentum distribution, calculated using the diffusion Monte Carlo method, and the inclusion of this additive correction allows for good agreement with available deep-inelastic neutron scattering data.

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MAZZANTI CASTRILLEJO, Ferran, et al. High-Momentum Response of Liquid 3He. Physical Review Letters. 2004. Vol. 92, num. 8, pags. 085301-1-085301-4. ISSN 0031-9007. [consulted: 12 of June of 2026]. Available at: https://hdl.handle.net/2445/12832

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