Quasiperiodic fields and Bose-Einstein condensation
  We construct a partition function for fields obeying a quasiperiodic boundary condition at finite temperature, $\psi(0;\vec x)= e^{i\theta} \psi(\beta;\vec x)$, which interpolate continously that ones corresponding to bosons and fermions and discuss the possibility of condensation for these fields. 
P. F. Borges, H. Boschi-Filho and C. Farina