Effect of randomness on surface critical phenomena.
Effect of randomness on surface critical phenomena.
复制标题
随机性对表面临界现象的影响。
DOI：
10.1103/physrevb.46.5917
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
Okabe
中科院分区：
文献类型：
--
作者：
Ohno;Okabe
研究了具有高斯随机性的S4模型的表面临界现象.利用重整化群四维展开，我们得到了表征随机不动点处关联函数η_random和η_random衰减的表面临界指数.计算了普通跃迁和特殊跃迁的二阶指数，并确定了该随机系统的表面标度关系η random =2η random -η random
We study surface critical phenomena of the S 4 model having Gaussian randomness. Using the renormalization-group 4-d expansion, we obtain surface critical exponents indicating the decay of the correlation function, η ∥ random and η ⊥ random , at the random fixed point. These exponents are evaluated for both the ordinary and special transitions up to the second order, and the surface scaling relation η random =2η ⊥ random -η ∥ random is confirmed in this random system