Deformation Expression for Elements of Algebras (VI) --Vacuum   representation of Heisenberg algebra--
  The Weyl algebra (W_{2m}[h]; *) is the algebra generated by u=(u_1,...,u_m,v_1,.....,v_m) over C with the fundamental commutation relation [u_i,v_j]=-ih\delta_{ij}, where h is a positive constant. The Heisenberg algebra (\Cal H_{2m}[nu];*) is the algebra given by regarding the scalar parameter h in the Weyl algebra W_{2m}[h] to be a generator nu which commutes with all others. 
Hideki Omori, Yoshiaki Maeda, Naoya Miyazaki and Akira Yoshioka
math-ph math.MP