  I study several aspects of the path(st) integral we formulated in previous
papers on energetic causal sets with Cortes and others. The focus here is on
quantum field theories, including the standard model of particle physics. I
show that the the theory can be extended to a quantum field theory, cut off in
momentum space. Fields of spin 0, 1/2 and 1 may be naturally included, which
allows us to formulate the standard model in this framework. The theory is at
first formulated in momentum space. Under certain conditions, spacetime can
emerge in a semiclassical limit. The theory comes with a $uv$ cutoff in
momentum space, $\mu$, hence that is also a scale for lorentz invariance to
break down. Traditionally, m is taken to be. a Planck energy, but we explore as
a possibility making m smaller.
