3d one-form mixed anomaly and entanglement entropy

A bstract We study mixed anomaly between G 1 and G 2 of one-form finite symmetry G 1 × G 2 in 3 d Chern-Simons theories. We assign a quantum entanglement structure to two linked G -symmetry lines (Wilson loops) and compute the entanglement entropy S [ G ]. We find a measure of the mixed anomaly by computing S [ G 1 × G 2 ] − S [ G 1 ] − S [ G 2 ].