Exact Eigenstates and Magnetic Response of Spin-1 and Spin-2 Bose-Einstein Condensates

1999/06/21 by Masato Koashi, Masahito Ueda · 7 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Physics of Superconductivity and Magnetism #Quantum, superfluid, helium dynamics #cond-mat

paper · pdf · doi:10.1103/physrevlett.84.1066

5 pages, no figures. LaTeX209

arxiv created 1999/06/21 · openalex publication_date 2000/02/07 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The exact eigenspectra and eigenstates of spin-1 and spin-2 Bose-Einstein condensates (BECs) are found, and their response to a weak magnetic field is studied and compared with their mean-field counterparts. Whereas mean-field theory predicts the vanishing population of the zero magnetic-quantum-number component of a spin-1 antiferromagnetic BEC, the component is found to become populated as the magnetic field decreases. The spin-2 BEC exhibits an even richer magnetic response due to quantum correlations among three bosons.

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