Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2002-09-02
Physics
Condensed Matter
Statistical Mechanics
14 pages, to appear in Proceedings in Confrence in Celebration of 80th Birthday
Scientific paper
10.1142/S021798490200441X
A quantum N-body problem with 2-component in (2+1)-dimension deduced from integrable model in (2+1) dimension is investigated. The Davey-Stewartson 1(DS1) system[Proc. R. Soc. London, Ser. A {\bf 338}, 101 (1974)] is an integrable model in two dimensions. A quantum DS1 system with 2 colour-components in two dimensions has been formulated. This two-dimensional problem has been reduced to two one-dimensional many-body problems with 2 colour-components. The solutions of the two-dimensional problem under consideration has been constructed from the resulting problems in one dimensions. For latters with the $\delta $-function interactions and being solved by the Bethe-Yang ansatz, we introduce symmetrical and antisymmetrical Young operators of the permutation group and obtain the exact solutions for the quantum DS1 system. The application of the solusions is discussed.
Yan Mu-Lin
Zhao Bao-Heng
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