Multifield Inflation after Planck: The Case for Nonminimal Couplings
Multifield Inflation after Planck: The Case for Nonminimal Couplings
Multifield models of inflation with nonminimal couplings are in excellent agreement with the recent results from {\it Planck}. Across a broad range of couplings and initial conditions, such models evolve along an effectively single-field attractor solution and predict values of the primordial spectral index and its running, the tensor-to-scalar ratio, …