Density fluctuation spectra of dilute 3He 4He mixtures
Density correlation functions of a 6% 3He 4He mixture are evaluated for wavenumbers in the roton vicinity in the zero temperature limit within a phenomenological theory which couples renormalized 4He single modes to 3He quasiparticle-quasihole excitations. Roton energy shifts are shown in agreement...
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| Published in | Physica B + C Vol. 107; no. 1; pp. 33 - 34 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier B.V
01.08.1981
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| Online Access | Get full text |
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| Summary: | Density correlation functions of a 6%
3He
4He mixture are evaluated for wavenumbers in the roton vicinity in the zero temperature limit within a phenomenological theory which couples renormalized
4He single modes to
3He quasiparticle-quasihole excitations. Roton energy shifts are shown in agreement with experiments to be caused mainly by the different structure of
4He in mixtures. Renormalization by emission of quasi-particle-quasihole excitations is of minor importance. |
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| ISSN: | 0378-4363 |
| DOI: | 10.1016/0378-4363(81)90323-5 |