T. J. Newman
Published 1998-06-24Version 1
We present and solve a continuum theory of vacancy-mediated diffusion (as evidenced, for example, in the vacancy driven motion of tracers in crystals). Results are obtained for all spatial dimensions, and reveal the strongly non-gaussian nature of the tracer fluctuations. In integer dimensions, our results are in complete agreement with those from previous exact lattice calculations. We also extend our model to describe the vacancy-driven fluctuations of a slaved flux line.
Comments: 25 Latex pages, subm. to Physical Review B
Meta-conformal algebras in $d$ spatial dimensions
Quantum fluctuations of systems of interacting electrons in two spatial dimensions
Bose-Einstein condensation in the presence of an impurity
