An H3 (G, T)-valued index of symmetry-protected topological phases with on-site finite group symmetry for two-dimensional quantum spin systems

We consider symmetry-protected topological phases with on-site finite group G symmetry beta for two-dimensional quantum spin systems. We show that they have H-3 (G, T)-valued invariant.

Automated summary

This study explores symmetry-protected topological phases in two-dimensional quantum spin systems with specific symmetries, demonstrating the existence of a specific invariant for these phases.