Planck 2015 结果. XIV. 暗能量与修正引力
宇宙学与河外天体物理
2016-09-28 v2
摘要
我们研究 Planck 数据对暗能量 (DE) 和修正引力 (MG) 模型的含义，超越宇宙常数情景。我们从 DE 仅直接影响背景演化的情况开始，考虑状态方程的泰勒展开、主成分分析和与最小耦合 DE 标量场势相关的参数化。在估计早期 DE 密度时，我们显著改进了现有限制。然后我们转向 DE 或 MG 扰动的通用参数化，涵盖有效场论和 MG 模型中引力势的现象学。最后，我们测试一系列特定模型，如 k-essence、f(R) 理论和耦合 DE。除了最新的 Planck 数据，我们的主要分析使用重子声学振荡、Ia 型超新星和哈勃常数的本地测量。我们进一步展示宇宙学扰动测量（如红移空间畸变和弱引力透镜）的影响。这些附加探针是检验 MG 模型和打破 Planck 与背景数据集组合中仍然存在的简并的重要工具。所有仅包含背景参数化的结果与 LCDM 一致。当检验也改变扰动的模型时（即使背景固定为 LCDM），在一些情景中出现某些张力：当用选定时间依赖性参数化与引力势相关的可观测量时，Planck TT+lowP 的最大张力为 \sim 2 sigma；当包含外部数据集时张力增加到最多 3 sigma。然而，当包含 CMB 透镜时它消失。
引用
@article{arxiv.1502.01590,
title = {Planck 2015 results. XIV. Dark energy and modified gravity},
author = {Planck Collaboration and P. A. R. Ade and N. Aghanim and M. Arnaud and M. Ashdown and J. Aumont and C. Baccigalupi and A. J. Banday and R. B. Barreiro and N. Bartolo and E. Battaner and R. Battye and K. Benabed and A. Benoît and A. Benoit-Lévy and J. -P. Bernard and M. Bersanelli and P. Bielewicz and A. Bonaldi and L. Bonavera and J. R. Bond and J. Borrill and F. R. Bouchet 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 P. R. Christensen and S. Church and D. L. Clements and S. Colombi and L. P. L. Colombo and C. Combet 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 F. -X. Désert and J. M. Diego and H. Dole and S. Donzelli and O. Doré and M. Douspis and A. Ducout and X. Dupac and G. Efstathiou and F. Elsner and T. A. Enßlin and H. K. Eriksen and J. Fergusson and F. Finelli and O. Forni and M. Frailis and A. A. Fraisse and E. Franceschi and A. Frejsel and S. Galeotta and S. Galli and K. Ganga and M. Giard and Y. Giraud-Héraud and E. Gjerløw and J. González-Nuevo and K. M. Górski and S. Gratton and A. Gregorio and A. Gruppuso and J. E. Gudmundsson and F. K. Hansen and D. Hanson and D. L. Harrison and A. Heavens and G. Helou and S. Henrot-Versillé and C. Hernández-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 Z. Huang and K. M. Huffenberger and G. Hurier and A. H. Jaffe and T. R. Jaffe and W. C. Jones and M. Juvela and E. Keihänen and R. Keskitalo and T. S. Kisner and J. Knoche and M. Kunz and H. Kurki-Suonio and G. Lagache and A. Lähteenmäki and J. -M. Lamarre and A. Lasenby and M. Lattanzi and C. R. Lawrence and R. Leonardi and J. Lesgourgues and F. Levrier and A. Lewis and M. Liguori and P. B. Lilje and M. Linden-Vørnle and M. López-Caniego and P. M. Lubin and Y. -Z. Ma and J. F. Macías-Pérez and G. Maggio and N. Mandolesi and A. Mangilli and A. Marchini and P. G. Martin and M. Martinelli and E. Martínez-González and S. Masi and S. Matarrese and P. Mazzotta and P. McGehee and P. R. Meinhold and A. Melchiorri and L. Mendes and A. Mennella and M. Migliaccio and S. Mitra and M. -A. Miville-Deschênes and A. Moneti and L. Montier and G. Morgante and D. Mortlock and A. Moss and D. Munshi and J. A. Murphy and A. Narimani and P. Naselsky and F. Nati and P. Natoli and C. B. Netterfield and H. U. Nørgaard-Nielsen and F. Noviello and D. Novikov and I. Novikov and C. A. Oxborrow and F. Paci and L. Pagano and F. Pajot and D. Paoletti and F. Pasian and G. Patanchon and T. J. Pearson and O. Perdereau and L. Perotto and F. Perrotta and V. Pettorino and F. Piacentini and M. Piat and E. Pierpaoli and D. Pietrobon and S. Plaszczynski and E. Pointecouteau and G. Polenta and L. Popa and G. W. Pratt and G. Prézeau and S. Prunet and J. -L. Puget and J. P. Rachen and W. T. Reach and R. Rebolo and M. Reinecke and M. Remazeilles and C. Renault and A. Renzi and I. Ristorcelli and G. Rocha and C. Rosset and M. Rossetti and G. Roudier and M. Rowan-Robinson and J. A. Rubiño-Martín and B. Rusholme and V. Salvatelli and M. Sandri and D. Santos and M. Savelainen and G. Savini and B. M. Schaefer and D. Scott and M. D. Seiffert and E. P. S. Shellard and L. D. Spencer and V. Stolyarov and R. Stompor and R. Sudiwala and R. Sunyaev and D. Sutton and A. -S. Suur-Uski and J. -F. Sygnet and J. A. Tauber and L. Terenzi and L. Toffolatti and M. Tomasi and M. Tristram and M. Tucci and J. Tuovinen and L. Valenziano and J. Valiviita and B. Van Tent and M. Viel and P. Vielva and F. Villa and L. A. Wade and B. D. Wandelt and I. K. Wehus and M. White and D. Yvon and A. Zacchei and A. Zonca},
journal= {arXiv preprint arXiv:1502.01590},
year = {2016}
}
备注
33 pages, 22 figures. Minor changes after journal acceptance