Christou, E;
De Juan, F;
Krüger, F;
(2020)
Criticality of Dirac fermions in the presence of emergent gauge fields.
Physical Review B
, 101
(15)
10.1103/PhysRevB.101.155121.
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Abstract
We consider spontaneous symmetry-breaking transitions of strongly interacting two-dimensional Dirac fermions minimally coupled to mass and emergent gauge field order parameters. Using a renormalization group analysis, we show that the presence of gauge fields leads to fermion-induced quantum (multi)criticality where the putative emergent Lorentz invariance is violated. We illustrate this with the example of translational symmetry breaking due to charge-density wave order on the honeycomb lattice. Finally, we identify that topological phase transitions are well described by this effective field theory.
| Type: | Article |
|---|---|
| Title: | Criticality of Dirac fermions in the presence of emergent gauge fields |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevB.101.155121 |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10095123 |
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