Planck 2013 结果. XXII. 对暴胀的限制
宇宙学与河外天体物理
2015-02-04 v3
摘要
我们分析了 Planck 数据对宇宙暴胀的启示。Planck 标称任务温度各向异性测量结合 WMAP 大角度偏振，将标量谱指数限制为 ，以超过 5 排除了精确的尺度不变性。Planck 确立了张量标量比的上限为 r < 0.11 (95% CL)。因此，Planck 数据缩小了允许的标准暴胀模型空间，偏好具有 V" < 0 的势。指数势模型、最简单的混合暴胀模型以及次数 n > 2 的单项式势模型不能很好地拟合数据。Planck 没有发现标量谱指数具有统计显著的变化，得到 。我们进行了几项放弃慢滚近似的分析，包括详细的模型比较和暴胀势重建。我们还研究了原初功率谱是否包含任何特征。我们发现具有参数化振荡特征的模型将拟合 改善了约 10；然而，贝叶斯证据并不偏好这些模型。通过将功率谱数据与 Planck 测量的 界限相结合，我们约束了几个具有广义拉格朗日量的单场暴胀模型。在曲率子和轴子场景中，CDM 等曲率模式的分数原初贡献的上限分别为 0.25% 或 3.9% (95% CL)。在具有任意相关 CDM 或中微子等曲率模式的模型中，由于相对于较高多极子略微降低了 多极子的理论预测，反相关性可将 改善约 4。尽管如此，数据与绝热初始条件一致。
引用
@article{arxiv.1303.5082,
title = {Planck 2013 results. XXII. Constraints on inflation},
author = {Planck Collaboration and P. A. R. Ade and N. Aghanim and C. Armitage-Caplan and M. Arnaud and M. Ashdown and F. Atrio-Barandela and J. Aumont and C. Baccigalupi and A. J. Banday and R. B. Barreiro and J. G. Bartlett and N. Bartolo and E. Battaner and K. Benabed and A. Benoit and A. Benoit-Levy and J. -P. Bernard and M. Bersanelli and P. Bielewicz and J. Bobin and J. J. Bock and A. Bonaldi and J. R. Bond and J. Borrill and F. R. Bouchet and M. Bridges and M. Bucher and C. Burigana and R. C. Butler and E. Calabrese and J. -F. Cardoso and A. Catalano and A. Challinor and A. Chamballu and H. C. Chiang and L. -Y Chiang and P. R. Christensen and S. Church and D. L. Clements and S. Colombi and L. P. L. Colombo and F. Couchot and A. Coulais and B. P. Crill and A. Curto and F. Cuttaia and L. Danese and R. D. Davies and R. J. Davis and P. de Bernardis and A. de Rosa and G. de Zotti and J. Delabrouille and J. -M. Delouis and F. -X. Desert and C. Dickinson and J. M. Diego and H. Dole and S. Donzelli and O. Dore and M. Douspis and J. Dunkley and X. Dupac and G. Efstathiou and T. A. Ensslin and H. K. Eriksen and F. Finelli and O. Forni and M. Frailis and E. Franceschi and S. Galeotta and K. Ganga and C. Gauthier and M. Giard and G. Giardino and Y. Giraud-Hiraud and J. Gonzalez-Nuevo and K. M. Gorski and S. Gratton and A. Gregorio and A. Gruppuso and J. Hamann and F. K. Hansen and D. Hanson and D. Harrison and S. Henrot-Versille and C. Hernandez-Monteagudo and D. Herranz and S. R. Hildebrandt and E. Hivon and M. Hobson and W. A. Holmes and A. Hornstrup and W. Hovest and K. M. Huffenberger and A. H. Jaffe and T. R. Jaffe and W. C. Jones and M. Juvela and E. Keihanen and R. Keskitalo and T. S. Kisner and R. Kneissl and J. Knoche and L. Knox and M. Kunz and H. Kurki-Suonio and G. Lagache and A. Lahteenmaki and J. -M. Lamarre and A. Lasenby and R. J. Laureijs and C. R. Lawrence and S. Leach and J. P. Leahy and R. Leonardi and J. Lesgourgues and A. Lewis and M. Liguori and P. B. Lilje and M. Linden-Vernle and M. Lopez-Caniego and P. M. Lubin and J. F. Macias-Perez and B. Maffei and D. Maino and N. Mandolesi and M. Maris and D. J. Marshall and P. G. Martin and E. Martinez-Gonzalez and S. Masi and M. Massardi and S. Matarrese and F. Matthai and P. Mazzotta and P. R. Meinhold and A. Melchiorri and L. Mendes and A. Mennella and M. Migliaccio and S. Mitra and M. -A. Miville-Deschenes and A. Moneti and L. Montier and G. Morgante and D. Mortlock and A. Moss and D. Munshi and J. A. Murphy and P. Naselsky and F. Nati and P. Natoli and C. B. Netterfield and H. U. Norgaard-Nielsen and F. Noviello and D. Novikov and I. Novikov and I. J. O'Dwyer and S. Osborne and C. A. Oxborrow and F. Paci and L. Pagano and F. Pajot and R. Paladini and S. Pandolfi and D. Paoletti and B. Partridge and F. Pasian and G. Patanchon and H. V. Peiris and O. Perdereau and L. Perotto and F. Perrotta and F. Piacentini and M. Piat and E. Pierpaoli and D. Pietrobon and S. Plaszczynski and E. Pointecouteau and G. Polenta and N. Ponthieu and L. Popa and T. Poutanen and G. W. Pratt and G. Prezeau and S. Prunet and J. -L. Puget and J. P. Rachen and R. Rebolo and M. Reinecke and M. Remazeilles and C. Renault and S. Ricciardi and T. Riller and I. Ristorcelli and G. Rocha and C. Rosset and G. Roudier and M. Rowan-Robinson and J. A. Rubino-Martin and B. Rusholme and M. Sandri and D. Santos and M. Savelainen and G. Savini and D. Scott and M. D. Seiffert and E. P. S. Shellard and L. D. Spencer and J. -L. Starck and V. Stolyarov and R. Stompor and R. Sudiwala and R. Sunyaev and F. Sureau and D. Sutton and A. -S. Suur-Uski and J. -F. Sygnet and J. A. Tauber and D. Tavagnacco and L. Terenzi and L. Toffolatti and M. Tomasi and J. Treguer-Goudineau and M. Tristram and M. Tucci and J. Tuovinen and L. Valenziano and J. Valiviita and B. Van Tent and J. Varis and P. Vielva and F. Villa and N. Vittorio and L. A. Wade and B. D. Wandelt and M. White and A. Wilkinson and D. Yvon and A. Zacchei and J. P. Zibin and A. Zonca},
journal= {arXiv preprint arXiv:1303.5082},
year = {2015}
}
备注
44 pages, 25 figures, 12 tables; updated version; small changes to match the published version