Structure factor for a Bose fluid

K.M. Khanna and O.P. Sinha

Physica A: Statistical Mechanics and its Applications, 1977, vol. 89, issue 3, 613-625

Abstract: The structure factor is calculated for a Bose fluid using an expression for S(k), which is approximately valid for all values of k. Marked fluctuations appear for k = 2.15 Å-1, near the roton dip in Ek, and at k = 3.65 Å-1 near the dip in the second branch of Ek. Our calculations are indirectly a theoretical justification for the existence of a second branch in Ek. The results presented here agree fairly well with the experimental values for k >; 3.0 Å-1 along with a dip at k = 3.67 Å-1 which has not been reported earlier. It also suggests the existence of two waves, phonons and rotons, for k >; 3.0 Å-1.

Date: 1977
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:89:y:1977:i:3:p:613-625

DOI: 10.1016/0378-4371(77)90086-3

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