New Higher Anomalies, SU(N) Yang-Mills Gauge Theory and ${\mathbb{CP}}^{\mathrm{N}-1}$ Sigma Model

Abstract

We hypothesize a new and more complete set of anomalies of certain quantum field theories (QFTs) and then give an eclectic verification. First, we propose a set of 't Hooft higher anomalies of 4d time-reversal symmetric pure SU(N)-Yang-Mills (YM) gauge theory with a second-Chern-class topological term at $\theta =\pi$, via 5d cobordism invariants (higher symmetry-protected topological states), with N = $2,3,4$ and others. Second, we propose a set of 't Hooft anomalies of 2d ${\mathbb{CP}}^{\mathrm{N}-1}$-sigma models with a first-Chern-class topological term at $\theta =\pi$, by enlisting all possible 3d cobordism invariants and selecting the matched terms. Based on algebraic/geometric topology, QFT analysis, manifold generator correspondence, condensed matter inputs such as stacking PSU(N)-generalized Haldane quantum spin chains, and additional physics criteria, we derive a correspondence between 5d and 3d new invariants. Thus we broadly prove a potentially complete anomaly-matching between 4d SU(N) YM and 2d ${\mathbb{CP}}^{\mathrm{N}-1}$ models at N = 2, and suggest new (but maybe incomplete) anomalies at N = 4. We formulate a higher-symmetry analog of "Lieb-Schultz-Mattis theorem" to constrain the low-energy dynamics.

arXiv comment46 pages, two columns. v5: Refinement, and correction to the anomalies at N = 4. v4: Sec IX provides the symmetry-extended TQFTs; while the symmetry-preserving TQFTs actually become spontaneously symmetry-breaking, agreed with Cordova-Ohmori's work. See companions arXiv:1812.11967 and arXiv:1904.00994

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• A Non-Perturbative Definition of the Standard Models
• Lorentz Symmetry Fractionalization and Dualities in (2+1)d
• Aspects of CFTs on Real Projective Space
• Line Operators of Gauge Theories on Non-Spin Manifolds
• TQFT, Symmetry Breaking, and Finite Gauge Theory in 3+1D
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• Peeking into the $\theta$ vacuum
• Unwinding Fermionic SPT Phases: Supersymmetry Extension
• Gauge Enhanced Quantum Criticality and Time Reversal Domain Wall: SU(2) Yang-Mills Dynamics with Topological Terms
• Non-Liquid Cellular States
• Is $N=2$ Large?
• Strongly coupled QFT dynamics via TQFT coupling
• Global anomaly matching in higher-dimensional ${\mathbb{CP}}^{N-1}$ model
• Generalized symmetries in singularity-free nonlinear $\sigma$ models and their disordered phases
• Spontaneous symmetry breaking in pure 2D Yang-Mills theory
• C-P-T Fractionalization
• Anomaly-induced edge currents in hydrodynamics with parity anomaly
• The mixed $0$-form/$1$-form anomaly in Hilbert space: pouring new wine into old bottles