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[hep-th/0702216] Amplitude of Perturbations from Inflation

Posted: March 01 2007
by Syksy Rasanen
In this paper, Leonard Parker (who is a veteran of quantum field theory in curved spacetime) considers the effect of renormalisation by adiabatic subtraction on the calculation of the amplitude of fluctuations generated during inflation. He claims that the effect of the the renormalisation, neglected in the usual treatments, suppresses the amplitude of the perturbations.

I have never gone through the calculation of the amplitude of the fluctuations in sufficient detail, and it would be very interesting to hear from people who have.