A Theoretical Investigation of Bound Roton Pairs in Superfluid Helium-4
The Bogoliubov theory of excitations in superfluid helium is used to study collective modes at zero temperature. A repulsive delta function shell potential is used in the quasiparticle excitation energy spectrum to fit the observed elementary excitation spectrum, except in the plateau region. The li...
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| Format: | Others |
| Language: | English |
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North Texas State University
1974
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| Online Access: | https://digital.library.unt.edu/ark:/67531/metadc501017/ |