Kenna R, Johnston D A, Janke W
Applied Mathematics Research Centre, Coventry University, Coventry, CV1 5FB, England.
Phys Rev Lett. 2006 Oct 13;97(15):155702. doi: 10.1103/PhysRevLett.97.155702. Epub 2006 Oct 9.
Multiplicative logarithmic corrections frequently characterize critical behavior in statistical physics. Here, a recently proposed theory relating the exponents of such terms is extended to account for circumstances which often occur when the leading specific-heat critical exponent vanishes. Also, the theory is widened to encompass the correlation function. The new relations are then confronted with results from the literature, and some new predictions for logarithmic corrections in certain models are made.
乘法对数修正常常刻画统计物理学中的临界行为。在此,一种最近提出的关于此类项指数的理论被扩展,以考虑当主导比热临界指数消失时经常出现的情况。此外,该理论被拓宽以涵盖关联函数。然后将新的关系与文献中的结果进行对比,并对某些模型中的对数修正做出一些新的预测。