Causality and gravity

A bstract We show how uncertainty in the causal structure of field theory is essentially inevitable when one includes quantum gravity. This fact that lightcones are ill-defined such a theory. effect small effective regime, where it independent UV completion theory, but grows with energy and represents an unknown for generic completion. include details causality which arises particular completion, i.e. quadratic describe mechanisms uncovered treatment, some those gravity, could be common features