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Quantum Origin of the Early Universe and the Energy Scale of Inflation | | A.O.Barvinsky
; A.Yu.Kamenshchik
; | | Date: |
17 Oct 1995 | | Journal: | Int.J.Mod.Phys. D5 (1996) 825-844 | | Subject: | gr-qc | | Abstract: | Quantum origin of the early inflationary Universe from the no-boundary and tunnelling quantum states is considered in the one-loop approximation of quantum cosmology. A universal effective action algorithm for the distribution function of chaotic inflationary cosmologies is derived for both of these states.The energy scale of inflation is calculated by finding a sharp probability peak in this distribution function for a tunnelling model driven by the inflaton field with large negative constant $xi$ of nonminimal interaction. The sub-Planckian parameters of this peak (the mean value of the corresponding Hubble constant ${mbox{oldmath $H$}}simeq 10^{-5}m_P$, its quantum width $Delta{mbox{oldmath $H$}}/{mbox{oldmath $H$}}simeq 10^{-5}$ and the number of inflationary e-foldings ${mbox{oldmath $N$}}simeq 60$) are found to be in good correspondence with the observational status of inflation theory, provided the coupling constants of the theory are constrained by a condition which is likely to be enforced by the (quasi) supersymmetric nature of the sub-Planckian particle physics model. | | Source: | arXiv, gr-qc/9510032 | | Services: | Forum | Review | PDF | Favorites | |
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