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CMB 与超标准宇宙学模型

CMB 与超标准宇宙学模型. 郭宗宽. 2014 年宇宙学前沿 研讨会 2014.6.12. 内容. Planck 之后的标准宇宙学 模型 Planck 之后 的一些宇宙学问题. 四 个“不一致”，一个“反常”。. 一 . Planck 之后的标准 宇宙学模型. 六参数标准宇宙学模型 Planck 对 标准 宇宙学模型的 限制. L aunched on 14 May 2009 30 months 5 full-sky surveys 29 papers, 20 March 2013

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CMB 与超标准宇宙学模型

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  1. CMB与超标准宇宙学模型 郭宗宽 2014年宇宙学前沿研讨会 2014.6.12

  2. 内容 • Planck之后的标准宇宙学模型 • Planck之后的一些宇宙学问题 四个“不一致”，一个“反常”。

  3. 一. Planck之后的标准宇宙学模型 • 六参数标准宇宙学模型 • Planck对标准宇宙学模型的限制 Launched on 14 May 2009 30 months 5 full-sky surveys 29 papers, 20 March 2013 Paper XVI cited by 1918 records

  4. 1. 六参数标准宇宙学模型 (1) 宇宙晚期的4个参数： (2) 宇宙早期的2个参数：

  5. 2. Planck对标准宇宙学模型的限制 与WMAP相比，Planck的优势： • high sensitivity • wide frequency • Planck: 30,44,70,100,143,217,353,545,857 GHz • WMAP: 23,33,41,61,94 GHz • high resolution ~ 5′ (WMAP: 15′) Planck WMAP9 TT

  6. “None of these models are favoured over the standard six-parameter ΛCDM cosmology.”

  7. 二. Planck之后的一些宇宙学问题 • 宇宙晚期的膨胀历史的观测 • Cepheid+SNeIa对H0的测量，SNLS对Ωm的测量 • 宇宙晚期的结构形成的观测 • Cluster，weak lensing对的测量 • 宇宙早期的原初扰动 • Planck温度涨落的反常 • Planck的温度谱对的限制 • BICEP2的B模极化谱对的限制

  8. 1.宇宙晚期的膨胀历史的观测 • H0: Cepheid+8 SNeIa, discrepant at 2.5σ • Ωm: SNLS, discrepant at the 2σlevel 1 Planck Collaboration, “Planck 2013 results. XVI. Cosmological parameters”, arXiv:1303.5076.

  9. eight a 1.4 discrepancy RG Cai, ZK Guo, B Tang, arXiv:1312.4309.

  10. 2.宇宙晚期的结构形成的观测 • : Planck galaxy cluster, discrepant at 3σ • :CFHTLenS cosmic shear, discrepant at 2σ 1σ Planck Collaboration, “Planck 2013 results. XX. Cosmology from Sunyaev-Zeldovich cluster counts”, arXiv:1303.5080.

  11. JW Hu, RG Cai, ZK Guo, B Hu, JCAP 05 (2014) 020.

  12. 3.宇宙早期的原初扰动 • Planck温度涨落的反常： the quadrupole-octopole alignment; power deficit at low-l; parity asymmetry; hemispherical asymmetry; the cold spot Planck Collaboration, “Planck 2013 results. XXIII. Isotropy and statistics of the CMB”, arXiv:1303.5083.

  13. the Sachs-Wolfe effect the diploe modulation of curvature perturbation the asymmetry A is For a single-field slow-roll inflation,

  14. YS Piao, B Feng, X Zhang, Phys. Rev. D 69 (2004) 103520. bounce inflation: For the bounce inflation, ZG Liu, ZK Guo, YS Piao, PRD 88 (2013) 063539; ZG Liu, ZK Guo, YS Piao, arXiv:1311.1599.

  15. Planck的温度谱对的限制 Planck Collaboration, “Planck 2013 results. XXII. Constraints on inflation”, arXiv:1303.5082.

  16. inflation with the Gauss-Bonnet coupling: ZK Guo, N. Ohta, S. Tsujikawa, PRD 75 (2007) 023520; ZK Guo, D.J. Schwarz, PRD 80 (2009) 063523; ZK Guo, D.J. Schwarz, PRD 81 (2010) 123520. PX Jiang, JW Hu, ZK Guo, PRD 88 (2013) 123508.

  17. BICEP2的B模极化谱对的限制 • “至于你信不信，我反正信了。” Data: Planck+WP+highL BICEP2 Collaboration, arXiv:1403.3985, cited by 424 records.

  18. method: ZK Guo, D.J. Schwarz, YZ Zhang, JCAP 08 (2011) 031; ZK Guo, YZ Zhang, JCAP 11 (2011) 032; ZK Guo, YZ Zhang, PRD 85 (2012) 103519. Planck+WP+BICEP2 Planck+WP+BICEP2 B Hu, JW Hu, ZK Guo, RG Cai, arXiv:1404.3690.

  19. a modulated potential: X Wang, B Feng, M Li, XL Chen, X Zhang, Int. J. Mod. Phys. D14 (2005) 1347; Y Wan, S Li, M Li, T Qiu, Y Cai, X Zhang, arXiv:1405.2784.

  20. 谢谢大家！

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