λ ϕ 4 as an effective theory in de Sitter - Apollo
repository.cam.ac.uk
This paper tests whether our most powerful physics shortcut — effective field theory — still holds up in the curved, expanding spacetime of de Sitter, where quantum corrections threaten to break the usual rules.
Effective Field TheoryQuantum Field Theory in Curved SpacetimeRenormalization GroupUV/IR Mixing