Evolving ultralight scalars into non-linearity with Lagrangian perturbation theory
Evolving ultralight scalars into non-linearity with Lagrangian perturbation theory
ABSTRACT Many models of high energy physics suggest that the cosmological dark sector consists of not just one, but a spectrum of ultralight scalar particles with logarithmically distributed masses. To study the potential signatures of low concentrations of ultralight axion (also known as fuzzy) dark matter, we modify Lagrangian perturbation …