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Can Planck disprove anisotropic inflation?

Jiro Soda
Home Institute: 
Kyoto University
483A Malevitch
Tuesday, 19. March 2013 - 14:00
In the conventional inflationary scenario, the statistical property of primordial fluctuations can be characterized by a statistically isotropic, Gaussian, and scale invariant power spectrum. However, in the presence of a vector field and its coupling to an inflaton, there could be vector hair during inflation which causes anisotropy in the expansion and the statistical property of primordial fluctuations. We named the model anisotropic inflation.  In this talk, I will review the anisotropic inflation and explain how to test it with Planck.