http://arxiv.org/abs/2211.02661
We study the effects of light QCD axions on the stellar configuration of white dwarfs. At finite baryon density, the non-derivative coupling of the axion to nucleons displaces the axion from its in-vacuum minimum which implies a reduction of the nucleon mass. This dramatically alters the composition of stellar remnants. In particular, the modifications of the mass-radius relationship of white dwarfs allow us to probe large regions of unexplored axion parameter space without requiring it to be a significant fraction of dark matter.
R. Balkin, J. Serra, K. Springmann, et. al.
Wed, 9 Nov 22
43/76
Comments: 6 pages, 3 figures