Cosmology seminar: Maresuke Shiraishi

Maresuke Shiraishi is a post-doc at INFN, Universita' degli Studi di Padova.

Eccentric CMB of symmetry-breaking origin

There are possibilities to violate invariances (e.g., Gaussianity, parity and isotropy) in primordial cosmological fluctuations. Such symmetry breakings will imprint very interesting signatures in late-time phenomena, which one may be possible to observe. Especially, CMB will change its face drastically, corresponding to the symmetry-breaking types, since the harmonic-space representation is very sensitive to the statistical, spin and angular dependences of cosmological perturbations. 

In this talk, I would discuss (1) general responses of the symmetry breakings to CMB, (2) some theoretical models creating interesting CMB signatures, and (3) aspects of the estimation from observational data.

Published Mar. 17, 2014 2:44 PM - Last modified Mar. 21, 2014 9:39 AM