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Is There a Scaler Field in Inflation?
Inflation is a theory for the perturbations in density that give rise to stars and galaxies. If inflation is correct, we certainly see the fluctuations in density and temperature in the universe. Inflation attributes those fluctuations to quantum fluctuations during the inflationary period. There's no evidence for it yet, but it was posited,. It very well could be related to other ideas in physics.