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Article overview
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Novel possibility of observable non-Gaussianities in the inflationary spectrum of primordial inhomogeneities | Gabriel Leon
; Daniel Sudarsky
; | Date: |
1 Sep 2011 | Abstract: | Inflation is considered one of the cornerstones of modern cosmology. However,
the account of the origin of cosmic structure, as provided by the standard
inflationary paradigm, is not fully satisfactory. The fundamental issue is the
inability of the usual account to point out the physical mechanism responsible
for generating the inhomogeneity and anisotropy of our Universe, starting from
the exactly homogeneous and isotropic vacuum state associated with the early
inflationary regime. We briefly review this issue here together with the
proposal to address this shortcoming in terms of a dynamical collapse of the
vacuum state of the inflaton field, which has been considered in previous
works. The main goal of this manuscript is discuss certain statistical aspects
associated with the collapse and its implications in the primordial spectrum,
particularly those connected with the possible appearance of a novel type of
non-Gaussianities. | Source: | arXiv, 1109.0052 | Services: | Forum | Review | PDF | Favorites |
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