High momentum response of liquid 3He

Abstract

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 ${}^3$He. The theory, developed as a natural extension of the Gersch-Rodriguez formalism, incorporates the Fermi statistics explicitely through a new additive term which depends on the semi-diagonal 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 a good agreement with available deep-inelastic neutron scattering data.

4 pages, accepted in Phys. Rev. Lett

References in corpus (7)

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• The Momentum Distribution of Liquid ${}^4$He
• The Momentum Distribution of Liquid ${}^3$He
• Dynamic properties and the roton mode attenuation in the liquid 3He: an ab initio study within the self-consistent method of moments
• Estimated values of the kinetic energy for liquid ${}^3$He
• Properties of fermionic systems with the Path-integral ground state method