Nov 12 – 15, 2013
Pagoda Hotel & Restaurant
Pacific/Honolulu timezone

The spectral index may be blue: superhorizon coupling to subhorizon modes.

Nov 14, 2013, 11:55 AM
25m
C'est Si Bon - Mauka (Pagoda Hotel & Restaurant)

C'est Si Bon - Mauka

Pagoda Hotel & Restaurant

1525 Rycroft St. Honolulu, HI 96814
oral Cosmology Cosmology III

Speaker

Joseph Bramante (University of Notre Dame)

Description

In a universe much larger than our current Hubble volume, locally unobservable long wavelength modes can induce a scale-dependence in the power spectrum of typical subvolumes, so that the observed spectral index varies at a cosmologically significant level. This talk will explain how super-Hubble dynamics can impact sub-Hubble measurements and survey the features of inflation models that would yield Hubble volumes with significantly varying spectral indices.

Primary author

Joseph Bramante (University of Notre Dame)

Co-authors

Jason Kumar (University of Hawaii) Prof. Sarah Shandera (Pennsylvania State University)

Presentation materials