Novel universality classes of coupled driven diffusive systems

Abhik Basu, Erwin Frey
2004 Physical Review E  
Motivated by the phenomenologies of dynamic roughening of strings in random media and magnetohydrodynamics, we examine the universal properties of driven diffusive system with coupled fields. We demonstrate that cross-correlations between the fields lead to amplitude-ratios and scaling exponents varying continuosly with the strength of these cross-correlations. The implications of these results for experimentally relevant systems are discussed.
doi:10.1103/physreve.69.015101 pmid:14995659 fatcat:mtizfuolyrg75dsk2zgvykr5lq