A Microscopic Theory of Odd-freqeuncy Pairing in the Two-dimensional   Extended Hubbard Model
  We present a microscopic theory of fluctuation-mediated pairing mechanism in a two-dimensional extended Hubbard model. In contrast to conventional wisdom, odd-frequency spin-triplet pairing can be stabilized near the spin-density-wave critical point. Favorable conditions for the odd-frequency pairing are the presence of geometrical frustration and off-site Coulomb interaction. 
Keiji Yada, Seiichiro Onari, Yukio Tanaka and Kazumasa Miyake