Scenarios of structure formation with axion-like particle dark matter can have distinctive signatures on scales ranging from kiloparsecs to astronomical units. They are governed almost entirely by the particle mass and therefore very predictive. However, much of the phenomenology is highly nonlinear, requiring large simulations and, in some cases, novel computational tools. Very similar phenomena might have appeared in an early matter dominated epoch after inflation. Here, the inflaton field itself fragments gravitationally, forming structures on microscopic scales that closely resemble cosmological large-scale structure.
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Meeting ID: 921 1801 0804