Geodesic
Ground state and excitations of a one-dimensional bose gas on a finite interval
Teoretičeskaâ i matematičeskaâ fizika, Tome 75 (1988) no. 1, pp. 148-156 Cet article a éte moissonné depuis la source Math-Net.Ru

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The Bethe ansatz is used to obtain the wave function of a one-dimensional bounded system of Bose particles interacting with one another through a two-body $\delta$-function potential. The interaction of the particles with the surface (the boundaries of the interval) is described by a zero-range potential. Expressions are obtained for the ground-state energy and for the spectrum of surface excitations. 
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     title = {Ground state and excitations of a~one-dimensional bose gas on a~finite interval},
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V. L. Bulatov. Ground state and excitations of a one-dimensional bose gas on a finite interval. Teoretičeskaâ i matematičeskaâ fizika, Tome 75 (1988) no. 1, pp. 148-156. http://geodesic.mathdoc.fr/item/TMF_1988_75_1_a12/

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