A simple WKB approximation gives explicit information about D0-brane bound
state wave functions, suggesting that at large N each individual D0-brane h
as a wave function exp(-cr(9/2)N(-1/2)). Thus the velocity dependent intera
ction energy v(4)r(-7) leads to an effective confining potential that grows
as r(7). [S0556-2821(99)03708-X].