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Primordial Non- Gaussianity From Inflation

Primordial Non- Gaussianity From Inflation. 黄庆国 21 世纪第二个十年宇宙学研讨会 中国科学院理论物理研究所 2011.3.18. MAP. Seeded by Quantum fluctuations. Curvature perturbation. time. General Relativity. Power spectrum. WMAP7: . Bispectrum (Non-Gaussianity). strength. shape. f_NL. interaction. WMAP7:.

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Primordial Non- Gaussianity From Inflation

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  1. Primordial Non-Gaussianity From Inflation 黄庆国 21世纪第二个十年宇宙学研讨会 中国科学院理论物理研究所 2011.3.18

  2. MAP Seeded by Quantum fluctuations

  3. Curvature perturbation time General Relativity

  4. Power spectrum WMAP7:

  5. Bispectrum (Non-Gaussianity) strength shape

  6. f_NL interaction

  7. WMAP7: NVSS: (Xia, Bonaldi, Baccigalupi, Zotti, Matarrese, Verde, Viel, 2010) PLANCK: Local shape

  8. WMAP7: Non-local shape

  9. General Single-field inflation Chen, Huang, Kachru, Shiu, 2006

  10. Stability of field theory: General Single-field inflation QGH, JCAP 05(2010)016

  11. Single-field inflation CANNOT generate large local form non-Gaussianity. all single-field inflation models Single-field inflation

  12. A multiplicity of scalar fields is generally expected in the fundamental theories going beyond standard model, such as supersymmetric theory. Multi fields

  13. Trajectory is tangent to the gradient of equipotentialhypersurface. Perturbation along the trajectory affects the value of the energy density. Perturbation transverse to the trajectory only perturbes the field values, but not the energy density. Multi-field inflation

  14. End of inflation QGH, JCAP 06(2009)035

  15. From quantum fluctuations of fields to the observed density perturbations Reheating Reheating dependens on the dynamics of inflation

  16. perturbed trajectory 0 C classical trajectory NG generated at the end of multi-field inflation QGH, JCAP 06(2009)035

  17. perturbed trajectory C classical trajectory NG generated at the end of multi-field inflation QGH, JCAP 06(2009)035

  18. perturbed trajectory classical trajectory C NG generated at the end of multi-field inflation QGH, JCAP 06(2009)035

  19. convex flat concave NG generated at the end of multi-field inflation QGH, JCAP 06(2009)035

  20. trajectory of inflaton loc. Local shape non-Gaussianity C S NG generated at the end of multi-field inflation QGH, JCAP 06(2009)035

  21. The next step.

  22. Scale dependence of f_NL^local CMB Large-scale structure

  23. Hoyle, Jimenez, Verde, 2010

  24. The spectral index and its running of f_NL^local from an isocurvature field: Byrnes, Gerstenlauer, Nurmi, Tasinato, Wands, 2010 QGH, 2010

  25. Sefusatti, Liguori, Yadav, Jackson, Pajer, JCAP 12(2009)022

  26. QGH, JCAP 11(2010)026

  27. Axion-type curvaton: QGH, JCAP 11(2010)026

  28. 2012

  29. 世界末日？？？

  30. 新的开始！

  31. Let’s wait…

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