Regensburg 2019 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 60: Quantum-Critical Phenomena (joint session TT/DY)
TT 60.3: Talk
Thursday, April 4, 2019, 15:30–15:45, H23
Deconfined criticality from the QED3-Gross-Neveu model — •Lukas Janssen1, Bernhard Ihrig2, Luminita N. Mihaila3, and Michael M. Scherer2 — 1Institut für Theoretische Physik, Technische Universität Dresden, Germany — 2Institut für Theoretische Physik, Universität zu Köln, Germany — 3Institut für Theoretische Physik, Universität Heidelberg, Germany
The QED3-Gross-Neveu model is a (2+1)-dimensional U(1) gauge field theory involving Dirac fermions and a critical real scalar field. It has been argued that this theory represents a dual description of the deconfined quantum critical point between Néel and valence bond solid orders in frustrated quantum magnets. I will present evidence for a novel scaling relation that implies emergent SO(5) symmetry at criticality.