Revisiting Kawasaki dynamics in one dimension.
Revisiting Kawasaki dynamics in one dimension.
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一维重温川崎动力学。
DOI：
10.1103/physreve.82.051121
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
M. D. Grynberg
中科院分区：
文献类型：
--
作者：
M. D. Grynberg
通过自旋和畴壁表象中演化算符的谱隙，对伊辛链中川崎动力学的临界指数进行了数值计算.在低温制度，后者提供了一个快速的有限尺寸收敛到这些指数，这往往是z = 3.11的瞬间淬火下铁磁耦合，而接近z = 2的antiferro的情况下。自旋表示补充了在较高的温度范围内，动力学仍然保持缓慢的动态指数的评价。
Critical exponents of the Kawasaki dynamics in the Ising chain are re-examined numerically through the spectrum gap of evolution operators constructed both in spin and domain-wall representations. At low-temperature regimes the latter provides a rapid finite-size convergence to these exponents, which tend to z ≃ 3.11 for instant quenches under ferromagnetic couplings, while approaching to z ≃ 2 in the antiferro case. The spin representation complements the evaluation of dynamic exponents at higher temperature scales, where the kinetics still remains slow.