Biconical critical dynamics
arXiv:1006.1766 · doi:10.1209/0295-5075/91/46002
Abstract
A complete two loop renormalization group calculation of the multicritical dynamics at a tetracritical or bicritical point in anisotropic antiferromagnets in an external magnetic field is performed. Although strong scaling for the two order parameters (OPs) perpendicular and parallel to the field is restored as found earlier, in the experimentally accessible region the effective dynamical exponents for the relaxation of the OPs remain different since their equal asymptotic values are not reached.
6 pages, 2 figures; some additions, corrected typos
References in corpus (5)
- Field theory of bi- and tetracritical points: Statics
- Supersolid phases in a realistic three-dimensional spin model
- Field theory of bi- and tetracritical points: Relaxational dynamics
- Critical dynamics, duality, and the exact dynamic exponent in extreme type II superconductors
- Field theory of bicritical and tetracritical points. III. Relaxational dynamics including conservation of magnetization (Model C)