Nested solitons in two-field fuzzy dark matter

• Published in: Monthly notices of the Royal Astronomical Society Vol. 527; no. 2; pp. 4162 - 4172
• Main Authors: Luu, Hoang Nhan, Mocz, Philip, Vogelsberger, Mark, May, Simon, Borrow, Josh, Tye, S-H Henry, Broadhurst, Tom
• Format: Journal Article
• Language: English
• Published: United States Oxford University Press 09.11.2023
• Subjects: ASTRONOMY AND ASTROPHYSICS; cosmology; dark matter; numerical; theory; methods: numerical; dark matter; cosmology: theory

Dark matter as scalar particles consisting of multiple species is well motivated in string theory where axion fields are ubiquitous. A two-field fuzzy dark matter (FDM) model features two species of ultralight axion particles with different masses, m1 ≠ m2, which is extended from the standard one-fi...