1304.0599 (Yi Wang)

Position Space CMB Anomalies from Multi-Stream Inflation    [PDF]

Yi Wang

Temporary domain walls are produced during the bifurcation era of multi-stream inflation. The observational effects from such a domain wall to inflationary perturbations are calculated. A domain wall induces a preferred direction in the sky, affecting the angular distribution of perturbations. A correlated suppression of multipoles together with an alignment of multipole moments on the preferred direction are generated. Other observational aspects of multi-stream inflation, including hemispherical asymmetry and cold spot are also briefly reviewed.

View original: http://arxiv.org/abs/1304.0599