title: Absorption line shape of a one-dimensional Bose gas.
abstract: We discuss the line shape for an internal state transition for bosonic atoms confined as a one-dimensional gas, using a method by Haldane. Typical line shape is an edge singularity due to the absence of Bose-Einstein condensation in such systems.
authors.affiliation: Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan.
authors.forename: S K
authors.initials: SK
authors.lastname: Yip