By deriving and studying the coordinate representation for the two-spinon wave function, we show that spinon excitations in the Haldane-Shastry model interact. The interaction is given by a short-range attraction and causes an enhancement in the two-spinon wave function at short separations between the spinons. We express the spin susceptibility for a finite lattice in terms of the enhancement, given by the two-spinon wave function at zero separation. In the thermodynamic limit, the spinon attraction turns into the square-root divergence in the dynamical spin susceptibility.
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Titolo: | Coordinate Representation of the Two-Spinon wavefunction and Spinon Interaction in the Haldane-Shastry model |
Autori: | |
Data di pubblicazione: | 2001 |
Rivista: | |
Handle: | http://hdl.handle.net/20.500.11770/139404 |
Appare nelle tipologie: | 1.1 Articolo in rivista |