Azcoiti Vicente, Di Carlo Giuseppe, Galante Angelo
Departamento de Física Teórica, Universidad de Zaragoza, Cl. Pedro Cerbuna 12, E-50009 Zaragoza, Spain.
Phys Rev Lett. 2007 Jun 22;98(25):257203. doi: 10.1103/PhysRevLett.98.257203. Epub 2007 Jun 20.
Using an approach to analyze the theta dependence of systems with a theta term we recently proposed, the critical behavior of CP(10 at theta=pi is studied. We find a region outside the strong coupling regime where Haldane's conjecture is verified. The critical line, however, does not belong to the universality class of the Wess-Zumino-Novikov-Witten model at topological coupling k=1 since it shows continuously varying critical exponents.
使用我们最近提出的一种分析带有θ项的系统的θ依赖性的方法，研究了CP(10)在θ = π时的临界行为。我们发现在强耦合区域之外存在一个区域，其中霍尔丹猜想得到了验证。然而，临界线不属于拓扑耦合k = 1时的韦斯-祖米诺-诺维科夫-维滕模型的普适类，因为它显示出临界指数的连续变化。
