Up to g^2 order, the PT-symmetric i phi^3 theory in d dimensions is shown to be isospectral to a local Hermitian phi^4 theory with coupling and vacuum terms fixed by mass matching.
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Isospectral local Hermitian theory for the $\mathcal{PT}$-symmetric $i\phi^3$ quantum field theory
Up to g^2 order, the PT-symmetric i phi^3 theory in d dimensions is shown to be isospectral to a local Hermitian phi^4 theory with coupling and vacuum terms fixed by mass matching.