Super-Acceleration from Massless, Minimally Coupled $\phi^4$

摘要: We derive a simple form for the propagator of massless, minimally coupled scalar in locally de Sitter geometry arbitrary spacetime dimension. then employ it to compute fully renormalized stress tensor at one and two loop orders phi^4 theory which is released Bunch-Davies vacuum t=0 co-moving coordinates. In this system uncertainty principle elevates above minimum its potential, resulting phase super-acceleration. With non-derivative self-interaction scalar's breaking invariance becomes observable. It also worth noting that weak energy condition violated on cosmological scales. An interesting subsidiary result canceling overlapping divergences requires conformal counterterm has no effect purely diagrams.