title: The role of causality in tunable Fermi gas condensates.
abstract: We develop a new formalism for the description of the condensates of cold Fermi atoms whose speed of sound can be tuned with the aid of a narrow Feshbach resonance. We use this to look for spontaneous phonon creation that mimics spontaneous particle creation in curved space-time in Friedmann-Robertson-Walker and other model universes.
authors.affiliation: Department of Physics, National Dong Hwa University, Hua-Lien, Taiwan 974, Republic of China.
authors.forename: Jen-Tsung
authors.initials: JT
authors.lastname: Hsiang
authors.forename: Chi-Yong
authors.initials: CY
authors.lastname: Lin
authors.forename: Da-Shin
authors.initials: DS
authors.lastname: Lee
authors.forename: Ray J
authors.initials: RJ
authors.lastname: Rivers
mesh_terms: D003198:Computer Simulation; D005740:Gases / Q000737:chemistry*; D008956:Models, Chemical; D008958:Models, Molecular; D015233:Models, Statistical; D013816:Thermodynamics
chemical_list: D005740:Gases