Physics Group Meeting
Formation of compact structures with axion dark matter
Light scalar dark matter fields can exhibit several interesting aspects to their cosmological evolution. I will focus mostly on structure formation with ultralight axions and with the QCD axion. The standard scenario leads to a suppression of structure on small scales. I will show that there can also be an enhancement of power just below the scale of suppression. This effect will lead to the formation of compact axion halos, with broad implications for their observational prospects.Reading list
Cosmology reviews for:-- ultralight axions (Marsh): https://arxiv.org/abs/1510.07633
-- QCD axion (Wantz & Shellard): https://arxiv.org/abs/0910.1066
First mentions of the enhanced structure effect:
-- by Zhang & Chiueh https://arxiv.org/abs/1702.07065
-- by Cedeno et al https://arxiv.org/abs/1703.10180
Cosmology reviews for:-- ultralight axions (Marsh): https://arxiv.org/abs/1510.07633
-- QCD axion (Wantz & Shellard): https://arxiv.org/abs/0910.1066
First mentions of the enhanced structure effect:
-- by Zhang & Chiueh https://arxiv.org/abs/1702.07065
-- by Cedeno et al https://arxiv.org/abs/1703.10180
Date & Time
March 13, 2019 | 1:45pm – 3:00pm
Location
Bloomberg Hall Physics LibrarySpeakers
Affiliation
Member, School of Natural Sciences, IAS; New York University