For a quartic scalar theory, a regulator-sourced 2PI flow gives faster running of the potential minimum and the cosmological constant, and slightly slower running of the quartic coupling, compared with the standard Wetterich equation.
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A new functional RG flow: regulator-sourced 2PI versus average 1PI
For a quartic scalar theory, a regulator-sourced 2PI flow gives faster running of the potential minimum and the cosmological constant, and slightly slower running of the quartic coupling, compared with the standard Wetterich equation.