The Laser Interferometer Space Antenna (LISA) has two scientific objectives of cosmological focus: to probe the expansion rate of the universe, and to understand stochastic gravitational-wave backgrounds and their implications for early universe and particle physics, from the MeV to the Planck scale. However, the range of potential cosmological applications of gravitational-wave observations extends well beyond these two objectives. This publication presents a summary of the state of the art in LISA cosmology, theory and methods, and identifies new opportunities to use gravitational-wave observations by LISA to probe the universe.
Auclair, P., & et al. (2023). Cosmology with the Laser Interferometer Space Antenna. Living Reviews in Relativity, 26(5), 1. https://doi.org/10.1007/s41114-023-00045-2 (Original work published 2023)