Ansatz of Hans Bethe for a two-dimensional Bose gas
Abstract
The method of q-oscillator lattices, proposed recently in [hep-th/0509181], provides the tool for a construction of various integrable models of quantum mechanics in 2+1 dimensional space-time. In contrast to any one dimensional quantum chain, its two dimensional generalizations -- quantum lattices -- admit different geometrical structures. In this paper we consider the q-oscillator model on a special lattice. The model may be interpreted as a two-dimensional Bose gas. The most remarkable feature of the model is that it allows the coordinate Bethe Ansatz: the p-particles' wave function is the sum of plane waves. Consistency conditions is the set of 2p equations for p one-particle wave vectors. These "Bethe Ansatz" equations are the main result of this paper.
Cite
@article{arxiv.nlin/0511043,
title = {Ansatz of Hans Bethe for a two-dimensional Bose gas},
author = {S. Sergeev},
journal= {arXiv preprint arXiv:nlin/0511043},
year = {2009}
}
Comments
LaTex2e, 12 pages