most cited invariants of topological insulators as geometric obstructions

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math-ph2014★ 37 cited

invariants of topological insulators as geometric obstructions

Domenico Fiorenza, Domenico Monaco, Gianluca Panati

We consider a gapped periodic quantum system with time-reversal symmetry of fermionic (or odd) type, i.e. the time-reversal operator squares to -1. We investigate the existence of…