Charged and neutral fixed points in the O(N)+O(N) model with Abelian gauge fields
Charged and neutral fixed points in the O(N)+O(N) model with Abelian gauge fields
复制标题
具有阿贝尔规范场的 O(N) O(N) 模型中的带电和中性固定点
DOI：
10.1103/physrevd.100.016005
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发表时间：
2019
影响因子：
5
通讯作者：
A.J. Beekman and G. Fejos
中科院分区：
文献类型：
--
作者：
T. N. Ikeda;K. Chinzei;H. Tsunetsugu;高橋英幸;A.J. Beekman and G. Fejos
在阿贝尔-希格斯模型或金兹伯格-朗道超导模型中，红外稳定带电不动点的存在确保了超导相变是二级的参数范围，而不是从科尔曼-温伯格机制推断的涨落诱导的一级。利用泛函重整化群研究了阿贝尔-希格斯模型的两个广义场的带电不动点和中性不动点，其中两个分量场耦合到两个规范场，并相互耦合.主要集中在三维，在中性的情况下，这是一个模型的两个组件玻色-爱因斯坦凝聚，我们证实了固定点结构建立在早期的作品使用不同的方法。荷电模型是二维位错介导的量子熔化的对偶理论。我们发现存在三个带电的不动点，而有额外的不动点。
In the Abelian-Higgs model, or the Ginzburg-Landau model of superconductivity, the existence of an infrared stable charged fixed point ensures that there is a parameter range where the superconducting phase transition is second order, as opposed to fluctuation-induced first order as one would infer from the Coleman-Weinberg mechanism. We study the charged and neutral fixed points of a two-field generalization of the Abelian-Higgs model, where two-component fields are coupled to two gauge fields and to each other, using the functional renormalization group. Focusing mostly on three dimensions, in the neutral case, this is a model for two-component Bose-Einstein condensation, and we confirm the fixed-point structure established in earlier works using different methods. The charged model is a dual theory of two-dimensional dislocation-mediated quantum melting. We find the existence of three charged fixed points for all, while there are additional fixed points for.