Testing the Everett Interpretation of Quantum Mechanics with Cosmology
  In this brief note, we argue that contrarily to what is still often stated, the Everett many-worlds interpretation of quantum mechanics is not in principle impossible to test. It is actually not more difficult (but not easier either) to test than most other kinds of multiverse theories. We also remind why multiverse scenarios can be falsified. 
Aurelien Barrau
gr-qc astro-ph.CO quant-ph