title: Deconfinement phase transition in a 3D nonlocal U(1) lattice gauge theory.
abstract: We introduce a 3D compact U(1) lattice gauge theory having nonlocal interactions in the temporal direction, and study its phase structure. The model is relevant for the compact QED3 and strongly correlated electron systems like the t-J model of cuprates. For a power-law decaying long-range interaction, which simulates the effect of gapless matter fields, a second-order phase transition takes place separating the confinement and deconfinement phases. For an exponentially decaying interaction simulating matter fields with gaps, the system exhibits no signals of a second-order transition.
authors.affiliation: Department of Applied Physics, Nagoya Institute of Technology, Nagoya 466-8555, Japan.
authors.forename: Gaku
authors.initials: G
authors.lastname: Arakawa
authors.forename: Ikuo
authors.initials: I
authors.lastname: Ichinose
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Matsui
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Sakakibara