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

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