Topological invariants for Standard Model: from semi-metal to topological insulator
G. E. Volovik
Low Temperature Laboratory, Helsinki University of Technology, FIN-02015 HUT, Finland
Landau Institute for Theoretical Physics RAS, 119334 Moscow, Russia
Abstract
We consider topological invariants describing semimetal (gapless)
and insulating (gapped) states of the quantum vacuum of Standard Model and
possible quantum phase transitions between these states.