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hep-th2016★ 16 cited
Anisotropic non-Gaussianity from Rotational Symmetry Breaking Excited Initial States
Amjad Ashoorioon, Roberto Casadio, Tomi Koivisto
If the initial quantum state of the primordial perturbations broke rotational invariance, that would be seen as a statistical anisotropy in the angular correlations of the cosmic m…
hep-th2011★ 17 cited
1/N Resolution to Inflationary eta-Problem
A. Ashoorioon, U. Danielsson, M. M. Sheikh-Jabbari
We observe that the dominant one loop contribution to the graviton propagator in the theory of N (N>>1) light scalar fields ϕ_a (with masses smaller than M_{pl}/\sqrt{N}) minimally…