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Dynamics of the Inflationary Flow Equations | | Sirichai Chongchitnan
; George Efstathiou
; | | Date: |
16 Aug 2005 | | Journal: | Phys. Rev. D 72, 083520 (2005) DOI: 10.1103/PhysRevD.72.083520 | | Subject: | astro-ph | | Abstract: | We present a dynamical analysis of the inflationary flow equations. Our technique uses the Hubble `jerk’ parameter as a discriminant of stability of fixed points. The results of the analysis are used to explain qualitatively the distribution of various observable parameters (e.g. the tensor-scalar ratio, r, and scalar spectral index, n_s) seen in numerical solutions of the flow equations using stochastic initial conditions. Finally, we give a physical interpretation of the flow in phase-space in terms of slow-roll motion of the inflaton. | | Source: | arXiv, astro-ph/0508355 | | Services: | Forum | Review | PDF | Favorites | |
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