Pre-inflation and trans-Planckian censorship
作者：Yong Cai,YunSong Piao
摘要：We investigate the implication of trans-Planckian censorship conjecture(TCC)for the initial state of primordial perturbations.It is possible to set the state of perturbation modes in the infinite past as the Minkowski vacuum,only if the pre-inflationary era is past-complete.We calculate the evolution of the perturbation modes in such a pre-inflationary era and show that at the beginning of inflation the perturbation modes with wavelengths much shorter than the Hubble scale(but still larger than the Planck length scale)will behave as they are in the Bunch-Davis state.Therefore,a past-complete pre-inflationary evolution may automatically prepare the initial state required for the inflationary perturbations at the CMB window while obeying the TCC.
发文机构：School of Physics Institute of Theoretical Physics
关键词：INFLATIONprimordialperturbationtrans-Planckiancensorshipconjecture
分类号： P159[天文地球—天文学]
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