The eternal inflation scenario predicts that our observable Universe resides inside a single bubble embedded in a vast inflating multiverse. We present the first observational tests of eternal inflation, performing a search for cosmological signatures of collisions with other bubble universes in cosmic microwave background data from the WMAP satellite. We conclude that the WMAP 7-year data do not warrant augmenting the cold dark matter model with a cosmological constant with bubble collisions, constraining the average number of detectable bubble collisions on the full sky N̅ _s<1.6 at 68% C.L. Data from the Planck satellite can be used to more definitively test the bubble-collision hypothesis
Abstract: Observing the relics of collisions between bubble universes would provide di-rect evidence...
This paper is the third in a series investigating the possibility that if we reside in an inflationa...
The theory of inflation was introduced to resolve many existing observational problems in cosmology....
The eternal inflation scenario predicts that our observable Universe resides inside a single bubble ...
The eternal inflation scenario predicts that our observable Universe resides inside a single bubble ...
In the picture of eternal inflation, our observable universe resides inside a single bubble nucleate...
In the picture of eternal inflation, our observable universe resides inside a single bubble nucleate...
In the picture of eternal inflation, our observable universe resides inside a single bubble nucleate...
In the picture of eternal inflation as driven by a scalar potential with multiple minima, our observ...
Eternal inflation predicts our observable universe lies within a bubble (or pocket universe) embedde...
An appealing theory is that our current patch of universe was born as a nucleation bubble from a pha...
We forecast the ability of cosmic microwave background (CMB) temperature and polarization data sets ...
We investigate the physics of eternal inflation, particularly the use of multiverse ideas to explain...
Perhaps the most controversial idea in modern cosmology is that our observable universe is contained...
A "bubble universe" nucleating in an eternally inflating false vacuum will experience, in the course...
Abstract: Observing the relics of collisions between bubble universes would provide di-rect evidence...
This paper is the third in a series investigating the possibility that if we reside in an inflationa...
The theory of inflation was introduced to resolve many existing observational problems in cosmology....
The eternal inflation scenario predicts that our observable Universe resides inside a single bubble ...
The eternal inflation scenario predicts that our observable Universe resides inside a single bubble ...
In the picture of eternal inflation, our observable universe resides inside a single bubble nucleate...
In the picture of eternal inflation, our observable universe resides inside a single bubble nucleate...
In the picture of eternal inflation, our observable universe resides inside a single bubble nucleate...
In the picture of eternal inflation as driven by a scalar potential with multiple minima, our observ...
Eternal inflation predicts our observable universe lies within a bubble (or pocket universe) embedde...
An appealing theory is that our current patch of universe was born as a nucleation bubble from a pha...
We forecast the ability of cosmic microwave background (CMB) temperature and polarization data sets ...
We investigate the physics of eternal inflation, particularly the use of multiverse ideas to explain...
Perhaps the most controversial idea in modern cosmology is that our observable universe is contained...
A "bubble universe" nucleating in an eternally inflating false vacuum will experience, in the course...
Abstract: Observing the relics of collisions between bubble universes would provide di-rect evidence...
This paper is the third in a series investigating the possibility that if we reside in an inflationa...
The theory of inflation was introduced to resolve many existing observational problems in cosmology....