Spontaneous breaking of spacetime symmetries and the inverse Higgs effect
Spontaneous breaking of spacetime symmetries and the inverse Higgs effect
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时空对称性的自发破缺和逆希格斯效应
DOI：
10.1103/physrevd.89.085004
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发表时间：
2014
影响因子：
5
通讯作者：
Haruki Watanabe
中科院分区：
文献类型：
--
作者：
T. Brauner;Haruki Watanabe
人们早就知道，当时空对称性自发破缺时，一些破缺的发生器可能不会产生独立的无隙Nambu-Goldstone激发。我们提供两个互补的观点，这一现象。一方面，我们表明，相应的场自由度具有相同的对称性变换性质的大规模，物质领域。“逆希格斯约束”，有时采用d从理论中消除这些模式，被重新解释为给出一个场参数化，使这些转换properties表现。另一方面，经典对称变换之间的关系通常会导致抽象诺特电流的恒等式，它允许所有破缺对称的Ward-Takahashi恒等式饱和，而无隙激励比仅仅计算破缺生成元所建议的要少。
It has been long known that when spacetime symmetry is spontaneously broken, some of the broken generators may not give rise to independent gapless, Nambu‐Goldstone excitations. We provide two complementary viewpoints of this phenomenon. On the one hand, we show that the corresponding field degrees of freedom have the same symmetry transformation properties as massive, matter fields. The “inverse Higgs constraints”, sometimes employe d to eliminate these modes from the theory, are reinterpreted as giving a field parametrization that makes these transformation pro perties manifest. On the other hand, relations among classical symmetry transformations generally lead to identities for the assoc iated Noether currents that allow saturation of the Ward‐Takahashi identities for all the broken symmetries with fewer gapless excitations than suggested by mere counting of broken generators.