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- W4308143977 abstract "The exact renormalization group (ERG) is formulated implementing the decimation of degrees of freedom by means of a particular momentum integration measure. The definition of this measure involves a distribution that links this decimation process with the dimensional regularization technique employed in field theory calculations. Taking the dimension [Formula: see text], the one-loop solutions to the ERG equations for the scalar field theory in this scheme are shown to coincide with the dimensionally regularized perturbative field theory calculation in the limit [Formula: see text], if a particular relation between the scale parameter [Formula: see text] and [Formula: see text] is employed. In general, it is shown that in this scheme the solutions to the ERG equations for the proper functions coincide when [Formula: see text] with the complete diagrammatic contributions appearing in field theory for these functions and this theory, provided that exact relations between [Formula: see text] and [Formula: see text] hold. In addition, a nonperturbative approximation is considered. This approximation consists in a truncation of the ERG equations, which by means of a low-momentum expansion leads to reasonable results." @default.
- W4308143977 created "2022-11-08" @default.
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- W4308143977 date "2022-11-20" @default.
- W4308143977 modified "2023-09-28" @default.
- W4308143977 title "The exact renormalization group and dimensional regularization" @default.
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- W4308143977 doi "https://doi.org/10.1142/s0217751x22501925" @default.
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