| HAL : hal-00431519, version 1 |
| arXiv : 0911.2502 |
| Fiche détaillée | Récupérer au format |
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| Ergodicity and Gaussianity for Spherical Random Fields |
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| Domenico Marinucci 1Giovanni Peccati 2 |
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| (12/11/2009) |
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| We investigate the relationship between ergodicity and asymptotic Gaussianity of isotropic spherical random fields, in the high-resolution (or high-frequency) limit. In particular, our results suggest that under a wide variety of circumstances the two conditions are equivalent, i.e. the sample angular power spectrum may converge to the population value if and only if the underlying field is asymptotically Gaussian, in the high frequency sense. These findings may shed some light on the role of Cosmic Variance in Cosmic Microwave Background (CMB) radiation data analysis. |
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| 1 : | Dipartimento di Matematica [Roma II] (DIPMAT) |
| Universita degli studi di Roma Tor Vergata | |
| 2 : | Modélisation aléatoire de Paris X (MODAL'X) |
| Université Paris X - Paris Ouest Nanterre La Défense | |
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| Domaine | : | Mathématiques/Probabilités Statistiques/Théorie Mathématiques/Statistiques Planète et Univers/Astrophysique/Cosmologie et astrophysique extra-galactique Physique/Astrophysique/Cosmologie et astrophysique extra-galactique |
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| Spherical Random Fields – High-Frequency Gaussianity – High-Frequency Ergodicity – Gaussian Subordination – Clebsch-Gordan Coefficients – Cosmic Variance |
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| Liste des fichiers attachés à ce document : | ||||||||||
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| hal-00431519, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00431519 | |
| oai:hal.archives-ouvertes.fr:hal-00431519 | |
| Contributeur : Giovanni Peccati | |
| Soumis le : Jeudi 12 Novembre 2009, 14:45:58 | |
| Dernière modification le : Vendredi 13 Novembre 2009, 00:10:40 | |