Anomalous dimensions and critical exponents for the Gross-Neveu-Yukawa model at five loops

Abstract

We renormalize the Gross-Neveu-Yukawa model with an $O(N)$ symmetry to $\mathcal{O}(\hat{I}{\mu }^5)$ in $d=4-\hat{I}\mu$ dimensions and determine the anomalous dimensions of the fermion and scalar fields, ${\hat{I}}^2$-functions as well as the scalar field's mass operator. These are used to construct several $N$ dependent critical exponents relevant for quantum transitions in semi-metals and in particular those connected with graphene in three dimensions when $N=2$. Improved exponent estimates for scalar fermion transitions on a honeycomb lattice, when $N=1$, as well as for $N=5$ are also given to compare with results from other techniques such as the conformal bootstrap.

25 pages, 7 figures