DYNAMIC STRUCTURE-FUNCTION IN HE-3-HE-4 MIXTURES

Authors
BORONAT J DALFOVO F MAZZANTI F POLLS A
Citation
J. Boronat et al., DYNAMIC STRUCTURE-FUNCTION IN HE-3-HE-4 MIXTURES, Physical review. B, Condensed matter, 48(10), 1993, pp. 7409-7418
Citations number
32
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
48
Issue
10
Year of publication
1993
Pages
7409 - 7418
Database
ISI
SICI code
0163-1829(1993)48:10<7409:DSIHM>2.0.ZU;2-Y
Abstract
Relevant features of the dynamic structure function S(q, omega) in He- 3-He-4 mixtures at zero temperature are investigated starting from kno wn properties of the ground state. Sum rules are used to fix rigorous constraints to the different contributions to S(q, omega), coming from He-3 and He-4 elementary excitations, as well as to explore the role of the cross term S(3,4 )(q, omega). Both the low-q (phonon-roton He-4 excitations and 1p-1h He-3 excitations) and high-q (deep-inelastic-sc attering) ranges are discussed.