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- W2950528038 abstract "Models of cosmic inflation suggest that our universe underwent an early phase of accelerated expansion, driven by the dynamics of one or more scalar fields. Inflationary models make specific, quantitative predictions for several observable quantities, including particular patterns of temperature anistropies in the cosmic microwave background radiation. Realistic models of high-energy physics include many scalar fields at high energies. Moreover, we may expect these fields to have nonminimal couplings to the spacetime curvature. Such couplings are quite generic, arising as renormalization counterterms when quantizing scalar fields in curved spacetime. In this chapter I review recent research on a general class of multifield inflationary models with nonminimal couplings. Models in this class exhibit a strong attractor behavior: across a wide range of couplings and initial conditions, the fields evolve along a single-field trajectory for most of inflation. Across large regions of phase space and parameter space, therefore, models in this general class yield robust predictions for observable quantities that fall squarely within the sweet spot of recent observations." @default.
- W2950528038 created "2019-06-27" @default.
- W2950528038 creator A5072742224 @default.
- W2950528038 date "2015-11-30" @default.
- W2950528038 modified "2023-09-27" @default.
- W2950528038 title "Nonminimal Couplings in the Early Universe: Multifield Models of Inflation and the Latest Observations" @default.
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