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Nuclear Physics B

Conformal invariance, finite-size effects, and the exact correlators for the δ-function bose gas

Alexander Bérkovich

Published Jun 1, 1991• 9 citations
Publisher
DOI
10.1016/0550-3213(91)90381-7

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The authors analyse the nonlinear Schrodinger model (the one-dimensional Bose gas) by means of conformal field theory in conjunction with a newly developed cutoff procedure. This makes it possible to obtain exact expressions for current correlators in the model. A number of new results are presented, including the expression for the two-point current correlator on a finite-size strip and the general n-point current correlator on the plane. All these results have the full time dependence and are presented to order 1/g, where g is the strength of the repulsive delta -function interaction.