By Alexander Felski and others

In a previous paper it was shown how to calculate the ground-state energy density *E* and the *p*-point Green's functions *G_p(x_1,x_2,...,x_p)* for the *PT*-symmetric quantum field theory defined by the Hamiltonian density *H=\frac{1}{2}(\nabla\phi)^2+\frac{1}{2}\phi^2(i\phi)^\varepsilon* in *D*-dimensional Euclidean spacetime, where *\phi* is a pseudoscalar field. In this earlier paper *E* and *G_p(x_1,x_2,...,x_p)*... Show more

March 13, 2021

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Towards perturbative renormalization of $φ^2(iφ)^\varepsilon$ quantum field theory

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