arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1802.09512hep-thcond-mat.str-el
收藏

Goldstone模与高阶对称性的光子化

Goldstone modes and photonization for higher form symmetries

Diego M. Hofman, Nabil Iqbal

摘要:

我们讨论了广义整体对称性及其破缺。我们延长戈德斯通定理,以更高形式的对称性表明,一个扩展的$p$维缺陷运营商下的连续$p$形式的广义全局对称性的周长法必然导致在频谱中的无隙模式。我们还表明,$p$形式的对称性在共形理论在$2(p+1)$维有一个自由实现。在四维空间中,这意味着$CFT_4$中的任何1-形式对称都可以通过自由麦克斯韦电动力学实现,即电流可以被光子化。光子化理论有无穷多个守恒的0-形式电荷,它们是通过对合适的1-形式积分对称电流而构造的。我们研究这些费用通过开发一个twistor为基础的形式主义,这是一个4D模拟通常的全纯复分析熟悉$CFT_2$。电荷服从一个代数的中心扩展,这是一个类似的二维阿贝尔卡茨-穆迪代数的更高形式的对称性。

英文摘要:

We discuss generalized global symmetries and their breaking. We extend Goldstone's theorem to higher form symmetries by showing that a perimeter law for an extended $p$-dimensional defect operator charged under a continuous $p$-form generalized global symmetry necessarily results in a gapless mode in the spectrum. We also show that a $p$-form symmetry in a conformal theory in $2(p+1)$ dimensions has a free realization. In four dimensions this means any 1-form symmetry in a $CFT_4$ can be realized by free Maxwell electrodynamics, i.e. the current can be photonized. The photonized theory has infinitely many conserved 0-form charges that are constructed by integrating the symmetry currents against suitable 1-forms. We study these charges by developing a twistor-based formalism that is a 4d analogue of the usual holomorphic complex analysis familiar in $CFT_2$. The charges are shown to obey an algebra with central extension, which is an analogue of the 2d Abelian Kac-Moody algebra for higher form symmetries.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑