Time and alternate realities/universe

[Shawakaze]

Just read something on time ordered products and complex fields. So if matter/particle is propagated from t to t' in a certain reaction and antimatter/antiparticles are propagated from t' to t. Does this mean that, relative to our universe, time flows in the opposite direction in a universe like ours but is composed iof antimatter?

 

[candyred312]

Opposite direction? As in reverse?

 

[Shawakaze]

Yes something like that.