Abstract
The coherence properties of holes coupled to short-ranged chiral spin fluctuations with a characteristic chiral spin fluctuation time ch=ch-1 are investigated in two dimensions. At temperatures kT4-1Latin small letter h with strokech hole quasiparticles exist and propagate with a renormalized mass m*/m=1+2Latin small letter h with stroke/16ma02ch. $langle phi sup 2 rangle is the amplitude of the local fictitious flux fluctuation and a0 is a lattice cutoff. At temperatures kT422-1Latin small letter h with strokech an effective-mass approximation is invalid and we find that the hole diffuses according to a logarithmic diffusion law in the quasistatic chiral field. The unusual diffusion law is a consequence of the long-ranged nature of the gauge field. The result shows that the holes do not form a coherent quantum fluid in the quasistatic regime. © 1991 The American Physical Society.