Abstract
The spectrum of rotons in two-dimensional liquid helium II is estimated within the Bijl-Feynman theory. Due to stronger short-range order and more effective back flow, the roton gap Δ is found to be about half as big as the bulk roton energy.
| Original language | English |
|---|---|
| Pages (from-to) | 671-676 |
| Number of pages | 6 |
| Journal | Journal of Low Temperature Physics |
| Volume | 25 |
| Issue number | 5-6 |
| DOIs | |
| State | Published - Dec 1976 |
| Externally published | Yes |
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