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Effective action study of the PT-symmetric (iϕ3)6−ϵ theory and the Yang–Lee edge singularity
( World Scientific Publishing Co. Pte Ltd , 2019 , Article)
We use the effective potential method to study the PT-symmetric iϕ3 field theory in 6−ϵ space–time dimensions. For ϵ=0, we obtained the first two energy levels which are real as well as reflecting the stability of the ...