Journal article
Elementary Excitations of Bose-Condensed, Spin-Aligned Atomic Hydrogen
Abstract
Ground-state properties and elementary excitations of superfluid spin-aligned atomic H are studied using methods adapted from the theory of liquid He4. The ground state is a k=0 condensate of the |↓ (electron), ↑ (proton)〉 hyperfine state with a small admixture of |↑↓〉 due to the hyperfine interaction. Excitations can also be labeled approximately by their hyperfine states. ϕ↓↑(k) excitations are phononlike. ϕ↓↑(k) and ϕ↑↓(k) are …
Authors
Berlinsky AJ
Journal
Physical Review Letters, Vol. 39, No. 6, pp. 359–362
Publisher
American Physical Society (APS)
Publication Date
August 8, 1977
DOI
10.1103/physrevlett.39.359
ISSN
0031-9007