Abstract
We extend our previous work on the cosmology of Coleman-de Luccia bubble
collisions. Within a set of approximations we calculate the effects on the
cosmic microwave background (CMB) as seen from inside a bubble which has
undergone such a collision. We find that the effects are always qualitatively
similar--an anisotropy that depends only on the angle to the collision
direction--but can produce a cold or hot spot of varying size, as well as power
asymmetries along the axis determined by the collision. With other parameters
held fixed the effects weaken as the amount of inflation which took place
inside our bubble grows, but generically survive order 10 efolds past what is
required to solve the horizon and flatness problems. In some regions of
parameter space the effects can survive arbitrarily long inflation.
Comment: 26+5 pages, 15 figures
Users
Please
log in to take part in the discussion (add own reviews or comments).