论文标题
秘密对称性破坏
Covert Symmetry Breaking
论文作者
论文摘要
当零级基态对还原坐标的依赖性依赖时，从较高维度到低维场理论的还原可以显示出特殊的特征。特别是，可以发生延迟的自发对称性破裂形式，仅在低维有效的野外理论作用中以第四阶揭示自己。在$（d+1）$ - 尺寸标量QED的简单模型中探索了这种现象，其中一个维度仅限于在相对端的Dirichlet/Robin边界条件的间隔。这产生了一种有效的$ d $维理论，具有麦克斯韦动态在自由理论层面上，但在四分之一的矢量 - 标准相互作用项中出现了异常的对称性破坏。选择了这个简单的模型来阐明在重力braneworld场景中也指出的效应机制。
Reduction from a higher-dimensional to a lower-dimensional field theory can display special features when the zero-level ground state has nontrivial dependence on the reduction coordinates. In particular, a delayed `covert' form of spontaneous symmetry breaking can occur, revealing itself only at fourth order in the lower-dimensional effective field theory action. This phenomenon is explored in a simple model of $(d+1)$-dimensional scalar QED with one dimension restricted to an interval with Dirichlet/Robin boundary conditions on opposing ends. This produces an effective $d$-dimensional theory with Maxwellian dynamics at the free theory level, but with unusual symmetry breaking appearing in the quartic vector-scalar interaction terms. This simple model is chosen to illuminate the mechanism of effects which are also noted in gravitational braneworld scenarios.
