Abstracts

Nemanja Kaloper

Falsifying anthropics

We propose using fuzzy axion dark matter to test the anthropic principle. The idea is that gravitational and astrophysical observations can discover a light axion in the regime where it must be all of dark matter with abundance which must be set up by the anthropic principle, due to excessive primordial misalignment induced by inflation. Yet it may turn out that dark matter is something else instead of this axion. This could invalidate the anthropic prediction of the dark matter abundance.