Statistics of baryon isocurvature perturbations in the inflationary universe
Physical Review D Volume 46 Issue 10
Page 4206-4217
published_at 1992-11-15
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| File | |
| Title ( eng ) |
Statistics of baryon isocurvature perturbations in the inflationary universe
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| Creator |
Nagasawa Michiyasu
Sasaki Misao
Suzuki Hiroshi
Yokoyama Jun'ichi
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| Source Title |
Physical Review D
|
| Volume | 46 |
| Issue | 10 |
| Start Page | 4206 |
| End Page | 4217 |
| Abstract |
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. It is also discussed why the Gaussian nature appears in these models.
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| NDC |
Physics [ 420 ]
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| Language |
eng
|
| Resource Type | journal article |
| Publisher |
American Physical Society
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| Date of Issued | 1992-11-15 |
| Rights |
Copyright (c) 1992 The American Physical Society
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 1550-7998
[DOI] 10.1103/PhysRevD.46.4206
[NCID] AA00773624
[DOI] http://dx.doi.org/10.1103/PhysRevD.46.4206
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