Helium nanodroplets and trapped Bose-Einstein condensates as prototypes of finite quantum fluids
arXiv:cond-mat/0107027 · doi:10.1063/1.1424926
Abstract
Helium nanodroplets and trapped Bose-Einstein condensates in dilute atomic gases offer complementary views of fundamental aspects of quantum many-body systems. We discuss analogies and differences, stressing their common theoretical background and peculiar features. We briefly review some relevant concepts, such as the meaning of superfluidity in finite systems, the behavior of elementary excitations and collective modes, as well as rotational properties and quantized vorticity.
15 pages, 1 eps figure, review article for J. Chem. Phys., thematic issue on Helium Nanodroplets