Isospectral local Hermitian theory for the $\mathcal{P}\mathcal{T}$-symmetric $i{\varphi }^3$ quantum field theory

Yi-Da Li, Qing Wang

We propose a new method to calculate perturbatively the isospectral Hermitian theory for the $\mathcal{P}\mathcal{T}$-symmetric $i{\varphi }^3$ quantum field theory in $d$ dimensions, whose result is…