High momentum response of liquid 3He

Details High momentum response of liquid 3He High momentum response of liquid 3He

2004-01-09

arxiv.org/abs/cond-mat/0401135v1

Physics

Condensed Matter

Statistical Mechanics

4 pages, accepted in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.92.085301

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.

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