Boundary effective field theory and trans-Planckian perturbations: astrophysical implications
Boundary effective field theory and trans-Planckian perturbations: astrophysical implications
We contrast two approaches to calculating trans-Planckian corrections to the inflationary perturbation spectrum: the New Physics Hypersurface [NPH] model, in which modes are normalized when their physical wavelength first exceeds a critical value, and the Boundary Effective Field Theory [BEFT] approach, where the initial conditions for all modes are set …