Title: “Hydrodynamics of 2-group global symmetry”
Abstract:
Can one always construct hydrodynamics descriptions out of global symmetry? Even if that symmetry is not a group?
2-group is a genuine symmetry structure resulting from extending the ordinary symmetry by one-form symmetry. A QFT with 2-group shares similar features with anomalous QFT, despite being anomaly free. I will give a few example of QFTs with 2-group global symmetry, particularly those obtained by gauging non-anomalous subgroup of a QFT with anomaly. I will outline how to construct hydrodynamic description of an interacting QFT with 2-group global symmetry in the IR.
If time allows, I will also briefly discussed the holographic dual of 2-group global symmetry.
Slides: