Rotons in Anyon Superfluids
| Autor: | Du, Yi-Hsien, Mehta, Umang, Son, Dam Thanh |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | J. High Energ. Phys. 2021, 101 (2021) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1007/JHEP03(2021)101 |
| Popis: | We consider the problem of calculating the excitation spectrum of a gas of nonrelativistic anyons. When the anyons have statistics close to fermionic and the statistical angle has the form $\theta=\pi (1-\frac{1}{k})$ where $k$ is a large integer, the problem can be solved by employing the method of bosonization, which maps the problem to that of an infinite number of bosonic excitations coupled to a $U(1)$ Chern-Simons gauge field. The spectrum consists of a Goldstone boson branch and a large number of massive branches, each having roton minima and maxima. The dispersion curves asymptote to the Landau levels at large momentum. Comment: 19 pages, 2 figures; clarifications added, typos fixed |
| Databáze: | arXiv |
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