Ba. Bernevig et al., Spinon-holon attraction in the supersymmetric t-J model with 1/r(2) interaction - art. no. 177206, PHYS REV L, 8717(17), 2001, pp. 7206
We derive the coordinate representation of the one-spinon one-holon wave fu
nction for the supersymmetric t-J model with 1/r(2) interaction. This resul
t allows us to show that a spinon and a holon attract each other at short d
istance. The attraction gets stronger as the size of the system is increase
d and, in the thermodynamic limit, it is responsible for the square-root si
ngularity in the hole spectral function.