KICP Seminars & Colloquia
KICP Seminars & Colloquia, Winter 2004
FRIDAY NOON SEMINARS
THURSDAY LUNCH DISCUSSIONS
Marvin Weinstein, Stanford University
I discuss the problem of inflation in the context of Friedmann-Robertson-Walker cosmology and quantize it in a way which parallels the classical discussion. Two of the Einstein equations arise as Heisenberg equations of motion, but the Friedmann equation, which classically is a constraint which defines physical solutions, acquires a welcome quantum correction. The general formalism is clarified by application to the case of de Sitter space, where I show that the welcome additional terms in the quantum version of the Friedmann equation eliminate the problem of the big crunch. I finally discuss the possible existence of measurable corrections to the anisotropy in the CMB radiation due to these quantum effects.