3 papers
cond-mat.str-el2019
Abelian Higgs model at four loops, fixed-point collision and deconfined criticality
Bernhard Ihrig, Nikolai Zerf, Peter Marquard +2
The abelian Higgs model is the textbook example for the superconducting transition and the Anderson-Higgs mechanism, and has become pivotal in the description of deconfined quantum…
cond-mat.str-el2018
Deconfined criticality from the QED-Gross-Neveu model at three loops
Bernhard Ihrig, Lukas Janssen, Luminita N. Mihaila +1
The QED-Gross-Neveu model is a (2+1)-dimensional U(1) gauge theory involving Dirac fermions and a critical real scalar field. This theory has recently been argued to represent…
cond-mat.str-el2018
Critical behavior of Dirac fermions from perturbative renormalization
Bernhard Ihrig, Luminita N. Mihaila, Michael M. Scherer
Gapless Dirac fermions appear as quasiparticle excitations in various condensed-matter systems. They feature quantum critical points with critical behavior in the 2+1 dimensional G…