M.
G.
Galan
Banik, S. ., Galan, M. G., Sosa-Martinez, H. ., Anderson, M. ., Eckel, S. ., Spielman, I. B., & Campbell, G. K. (2022). Accurate Determination of Hubble Attenuation and Amplification in Expanding and Contracting Cold-Atom Universes. Physical Review Letters, 128. http://doi.org/10.1103/PhysRevLett.128.090401