Quantum field theory propagator
= Quantum field theory propagator
{wiki=Propagator}
A propagator is a time-ordered two-point function and a Green function for the quadratic kinetic operator with an $i\epsilon$ boundary prescription.
= Quantum field theory propagator
{wiki=Propagator}
A propagator is a time-ordered two-point function and a Green function for the quadratic kinetic operator with an $i\epsilon$ boundary prescription.