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Quantum origin of the early inflationary Universe | | A.O. Barvinsky
; A.Yu. Kamenshchik
; I.V. Mishakov
; | | Date: |
2 Dec 1996 | | Journal: | Nucl.Phys. B491 (1997) 387-426 | | Subject: | gr-qc | | Abstract: | We give a detailed presentation of a recently proposed mechanism of generating the energy scale of inflation by loop effects in quantum cosmology. We discuss the quantum origin of the early inflationary Universe from the no-boundary and tunneling quantum states and present a universal effective action algorithm for the distribution function of chaotic inflationary cosmologies in both of these states. The energy scale of inflation is calculated by finding a sharp probability peak in this distribution function for a tunneling model driven by the inflaton field with large negative constant $xi$ of non-minimal interaction. The sub-Planckian parameters of this peak (the mean value of the corresponding Hubble constant $Hsimeq 10^{-5}m_P$, its quantum width $Delta H/Hsimeq 10^{-5}$ and the number of inflationary e-foldings $Ngeq 60$) 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/9612004 | | Services: | Forum | Review | PDF | Favorites | |
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