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Dynamic structure function in 3-4He mixtures
Boronat Medico, Jordi; Dalfovo, Franco; Mazzanti, F.; Polls Martí, Artur
Universitat de Barcelona
Relevant features of the dynamic structure function S(q,¿) in 3-4He mixtures at zero temperature are investigated starting from known properties of the ground state. Sum rules are used to fix rigorous constraints to the different contributions to S(q,¿), coming from 3He and 4He elementary excitations, as well as to explore the role of the cross term S(3,4)(q,¿). Both the low-q (phonon-roton 4He excitations and 1p-1h 3He excitations) and high-q (deep-inelastic-scattering) ranges are discussed.
Matèria condensada
Condensed matter
(c) The American Physical Society, 1993
The American Physical Society

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