References & Citations
High Energy Physics - Lattice
Title: Action of the axial $U(1)$ non-invertible symmetry on the 't~Hooft line operator: A lattice gauge theory study
(Submitted on 25 Mar 2024 (v1), last revised 2 Apr 2024 (this version, v2))
Abstract: We study how the symmetry operator of the axial $U(1)$ non-invertible symmetry acts on the 't~Hooft line operator in the $U(1)$ gauge theory by employing the modified Villain-type lattice formulation. We model the axial anomaly by a compact scalar boson, the ``QED axion''. For the gauge invariance, the simple 't~Hooft line operator, which is defined by a line integral of the dual $U(1)$ gauge potential, must be ``dressed'' by the scalar and $U(1)$ gauge fields. A careful consideration on the basis of the anomalous Ward--Takahashi identity containing the 't~Hooft operator with the dressing factor and a precise definition of the symmetry operator on the lattice shows that the symmetry operator leaves no effect when it sweeps out a 't~Hooft loop operator. This result appears inequivalent with the phenomenon concluded in the continuum theory. The same result is obtained for the axion string operator.
Submission history
From: Hiroshi Suzuki [view email][v1] Mon, 25 Mar 2024 13:27:39 GMT (34kb)
[v2] Tue, 2 Apr 2024 10:35:40 GMT (35kb)
Link back to: arXiv, form interface, contact.