Loop Corrections to Cosmological Perturbations in Multi-field Inflationary Models
نویسندگان
چکیده
We investigate one-loop quantum corrections to the power spectrum of adiabatic perturbation from entropy modes/adiabatic mode cross-interactions in multiple DBI inflationary models. We find that due to the non-canonical kinetic term in DBI models, the loop corrections are enhanced by slow-varying parameter ǫ and small sound speed cs. Thus, in general the loop-corrections in multi-DBI models can be large. Moreover, we find that the loop-corrections from adiabatic/entropy cross-interaction vertices are IR finite.
منابع مشابه
Loop Corrections to Cosmological Perturbations in Multi-field Inflationary Models: I. Entropy Loops
We investigate one-loop quantum corrections to the power spectrum of adiabatic perturbation from entropy modes/adiabatic mode cross-interactions in multiple DBI inflationary models. We find that due to the non-canonical kinetic term in DBI models, the loop corrections are enhanced by slow-varying parameter ǫ and small sound speed cs. Thus, in general the loop-corrections in multi-DBI models can...
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