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arxiv: 1608.02560 · v2 · pith:ISWHNCT4new · submitted 2016-08-08 · ❄️ cond-mat.mes-hall · hep-th

Note on "Quantum superconducting criticality in graphene and topological insulators"

classification ❄️ cond-mat.mes-hall hep-th
keywords criticaldiractransitionchargedfermionflavorsnumberpoint
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We correct our previous conclusion regarding the fate of a charged quantum critical point across the superconducting transition for two dimensional massless Dirac fermion. Within the leading order $\epsilon$ expansion, we now find that the requisite number of four-component Dirac fermion flavors ($N_f$) for the continuous phase transition through a charged critical point is $N_f>18.2699$. For $N_f\geq1/2$, the critical number of bosonic flavors for this transition is significantly reduced as compared to the value determined in the absence of the Dirac fermions in the theory.

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