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math-ph2018★ 3 cited
Graph rules for the linked cluster expansion of the Legendre effective action
Rudrajit Banerjee, Max Niedermaier
Graph rules for the linked cluster expansion of the Legendre effective action are derived and proven in Euclidean dimensions. A key aspect is the weight assigned t…
hep-lat2018
Critical behavior of the hopping expansion from the Functional Renormalization Group
Rudrajit Banerjee
A lattice version of the widely used Functional Renormalization Group (FRG) for the Legendre effective action is solved - in principle exactly - in terms of graph rules for the lin…