Density of states in gauge theories.
Density of states in gauge theories.
复制标题
规范理论中的态密度。
作者：
K. Langfeld;B. Lucini;A. Rago
使用 Wang-Landau 算法的修改版本计算 SU(2)、SU(3) 和紧凑 U(1) 晶格规范理论的态密度。我们发现，对于大至 20(4) 的晶格尺寸，SU(2) 规范理论的态密度可以在 120,000 个数量级的范围内可靠地计算。我们通过再现 SU(2) 平均作用、其比热以及 U(1) 中弱一阶跃迁的临界耦合来证明该算法的潜力。
The density of states is calculated for the SU(2), SU(3), and a compact U(1) lattice gauge theories using a modified version of the Wang-Landau algorithm. We find that the density of states of the SU(2) gauge theory can be reliably calculated over a range of 120,000 orders of magnitude for lattice sizes as big as 20(4). We demonstrate the potential of the algorithm by reproducing the SU(2) average action, its specific heat, and the critical couplings of the weak first order transition in U(1).