1211.3586 (K. Andrzejewski et al.)

N-Galilean conformal algebras and quantum theory with higher order time
derivatives    [PDF]

K. Andrzejewski, J. Gonera, P. Kosinski

It is shown that centrally extended N-Galilean conformal algebra, with N-odd, is the maximal symmetry algebra of the Schrodinger equation corresponding to the free Lagrangian involving (N+1)/2-th order time derivatives.

View original: http://arxiv.org/abs/1211.3586