Energy gaps and roton structure above the v = 1/2 Laughlin state of a rotating dilute Bose-Einstein condensate

Tatsuya Nakajima, Masahito Ueda

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

Exact diagonalization study on faster rotating Bose-Eistein condensates (BECs) was performed. Two distinct kinds of energy gaps were found: one above the single-vortex state and the other associated with vortex-antivortex pair excitations above the v=1/2 Laughlin state. Furthermore, it was found that higher excited states with L≲N form linear energy bands.

Original languageEnglish
Pages (from-to)140401/1-140401/4
JournalPhysical Review Letters
Volume91
Issue number14
Publication statusPublished - 2003 Oct 3

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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