Tomboulis E T, Velytsky A
Department of Physics and Astronomy, UCLA, Los Angeles, California 90095-1547, USA.
Phys Rev Lett. 2007 May 4;98(18):181601. doi: 10.1103/PhysRevLett.98.181601. Epub 2007 May 1.
We investigate the construction of improved actions by the Monte Carlo renormalization group method in the context of SU(2) gauge theory utilizing different decimation procedures and effective actions. We demonstrate that the basic self-consistency requirement for correct application of the Monte Carlo renormalization group, i.e., that the decimated configurations are equilibrium configurations of the adopted form of the effective action, can be achieved only by careful fine-tuning of the choice of decimation prescription and/or action.
我们在SU(2)规范理论的背景下，利用不同的抽取程序和有效作用量，通过蒙特卡罗重整化群方法研究改进作用量的构建。我们证明，蒙特卡罗重整化群正确应用的基本自洽要求，即抽取后的构型是所采用有效作用量形式的平衡构型，只有通过仔细微调抽取规则和/或作用量的选择才能实现。
