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hep-th1995
Multiparticle tree amplitudes in scalar field theory
Fernando T Brandt, Josif Frenkel
Following an argument advanced by Feynman, we consider a method for obtaining the effective action which generates the sum of tree diagrams with external physical particles. This t…
hep-th1995★ 5 cited
Nonlinear couplings and tree amplitudes in gauge theories
F. T. Brandt, J. Frenkel
Following a remark advanced by Feynman,we study the connection between the form of the nonlinear vertices involving gauge particles and the Abelian gauge invariance of physical tre…