Renormalization: An Introduction

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Batalin-Vilkovisky Formalism in Perturbative Algebraic Quantum Field Theory (2011, methodology): “The equivalence is induced by an invertible linear operator T, called the time ordering operator, which formally coincides with the convolution with the “Gaussian measure” associated to the path integral for the free theory, and was first used in the flow equation approach to renormalization in the ”
Tracking the Footprints of Spin Fluctuations: A MultiMethod, MultiMessenger Study of the Two-Dimensional Hubbard Model (2020, unknown): “[37, 251–253] for a review, 1/T n kx k refine x px 1 4 8 15 40 2 4 8 15 40 3 4 8 15 40 5 6 12 15 60 7 8 16 15 80 8 8 16 15 80 10 8 16 15 80 11 8 16 15 80 12 8 16 15 80 13 8 20 15 100”
Functional renormalization group approach to correlated fermion systems (2011, methodology): “The graph in (b) gets no extra small factor, but the graph in (c) has overlapping loops and for positively curved Fermi surfaces in d = 2, its contribution gets suppressed by an additional small factor ∼ ΛΛI log ΛI Λ at scales below a scale ΛI , which depends only on the geometry of the constant ene”