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- W80364013 abstract "''Perturbation theory'' rules are developed for calculating the effect of instantons in a pure Yang-Mills theory with no fermions, in the ''dilute gas'' approximation in which the N-instanton solution is assumed to be the sum of N widely separated one-instanton solutions. These rules are then used to compute the gluon propagator and proper vertex function including all orders of the instanton interaction but only to lowest order in the gluon coupling. It is to be expected that such an approximation is valid only for momenta q larger than the physical mass ..mu... The result is that in this regime instantons cause variations in the propagator and vertex of the form (..mu../sup 2//q/sup 2/)/sup -8..pi../sup 2/b/ where b is the coefficient in the expansion of the ..beta.. function: ..beta.. = bg/sup 3/+... ." @default.
- W80364013 created "2016-06-24" @default.
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- W80364013 date "1977-05-01" @default.
- W80364013 modified "2023-09-26" @default.
- W80364013 title "Perturbation theory with instantons. [Gluon propagator, proper vertex function]" @default.
- W80364013 doi "https://doi.org/10.2172/7210599" @default.
- W80364013 hasPublicationYear "1977" @default.
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