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Slow domain growth in a system with competing interactions

机译:具有竞争性相互作用的系统中域的缓慢增长

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摘要

We carry out a numerical study of the growth of domains following a quench in a three-dimensional scalar model with competing ferromagnetic J1 and antiferromagnetic J2 [infinity] ), L / R-->0, restoring scaling and isotropy. Under the assumption of analyticity, the asymptotic scaling function is identical to the pure Ising model. The slow logarithmic growth arises from a renormalization of the kinetic coefficient at the smaller length scale L, and can be associated with the dangerously irrelevant operator J2 at the zero-temperature fixed point (ZFP). This implies that at the ZFP, the two models, with and without J2, belong to the same universality class.
机译:我们对具有竞争性铁磁J1和反铁磁J2 [infinity])中,L / R-> 0,恢复缩放比例和各向同性。在分析的假设下,渐近缩放函数与纯Ising模型相同。对数增长缓慢是由于在较小的长度标度L上重新将动力学系数归一化而引起的,并且可能与零温度固定点(ZFP)上危险无关的算子J2相关。这意味着在ZFP中,有和没有J2的两个模型都属于同一通用性类。

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