Speaker
Félix Rose
Description
Using the nonperturbative functional renormalization group (FRG) within the Blaizot-Méndez-Galain-Wschebor approximation, we compute the operator product expansion (OPE) coefficient c112 associated with the operators O1∼φ and O2∼φ2 in the three-dimensional O(N) universality class and in the Ising universality class (N=1) in dimensions 2≤d≤4. When available, exact results and estimates from the conformal bootstrap and Monte-Carlo simulations compare extremely well to our results, while FRG is able to provide values across the whole range of d and N considered.
