Statistics of baryon isocurvature perturbations in the inflationary universe | Zendy

Kazuhiro Yamamoto | Zendy; Michiyasu Nagasawa | Zendy; Misao Sasaki | Zendy; Hiroshi Suzuki | Zendy; Jun Yokoyama | Zendy

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Statistics of baryon isocurvature perturbations in the inflationary universe

Author(s) -

Kazuhiro Yamamoto,

Michiyasu Nagasawa,

Misao Sasaki,

Hiroshi Suzuki,

Jun Yokoyama

Publication year - 1992

Publication title -

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

Language(s) - English

Resource type - Journals

eISSN - 1089-4918

pISSN - 0556-2821

DOI - 10.1103/physrevd.46.4206

Subject(s) - physics , inflation (cosmology) , baryon , gaussian , de sitter universe , universe , statistical physics , baryon number , distribution (mathematics) , cosmology , scale (ratio) , non gaussianity , particle physics , theoretical physics , astrophysics , quantum mechanics , cosmic microwave background , mathematical analysis , mathematics , anisotropy

The statistical distribution of baryon-number fluctuations, which may provide a proper initial condition for the minimal isocurvature scenario, is carefully investigated both analytically and numerically. For fluctuations associated with power-law inflation, we find that the distribution is highly non-Gaussian on scales of pregalactic star formation while it is Gaussian on scales of large-scale structure. On the other hand, in the pure de Sitter universe, it is shown to be Gaussian on any astrophysical scale

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