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hep-th2021
$\PT$ Symmetry and Renormalisation in Quantum Field Theory
Carl M Bender, Alexander Felski, S P Klevansky +1
Quantum systems governed by non-Hermitian Hamiltonians with $\PT$ symmetry are special in having real energy eigenvalues bounded below and unitary time evolution. We argue that $\P…
hep-th2021★ 20 cited
Towards perturbative renormalization of quantum field theory
Alexander Felski, Carl M. Bender, S. P. Klevansky +1
In a previous paper it was shown how to calculate the ground-state energy density and the -point Green's functions for the -symmetric quantum fiel…