Could a temporal causality loop have created the big bang?

A temporal causality loop is when point a affects point b, which affects point c, which in turn affects point c. Without point a, point c couldn't exist, and without point c, neither could point a. So with that in mind, could a modern event have affected space/time to the point where the universe could not have been created without it(say a wormhole created by the first nuclear explosion, or the LHC at CERN)?