We show that the asymptotic infinite dimensional enlarged gauge symmetries constructed for QED are anomalous in Weyl semimetals. This symmetry is particularly important in particle physics for its analogy with the Bondi–Metzner–Sachs (BMS) symmetries in gravity, as well as for its connection with QED soft IR theorems. This leads to observable effects, because of the induction of a new current in the material, which carries a memory of the BMS symmetry precursor.

中文翻译：

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QED 中的类似 BMS 对称性和 Dirac 和 Weyl 半金属中的量子异常

我们证明了为 QED 构建的渐近无限维扩大规范对称性在 Weyl 半金属中是反常的。这种对称性在粒子物理学中尤为重要，因为它与引力中的 Bondi-Metzner-Sachs (BMS) 对称性相似，并且与 QED 软 IR 定理有关。这导致了可观察到的效果，因为在材料中感应了一个新的电流，该电流带有 BMS 对称前体的记忆。