  It is well-known that additional constraints emerge in light cone
coordinates. We enumerate the number of physical modes in light cone
coordinates and compare it with conventional coordinates. We show that the
number of Schrodinger modes is divided by two in light cone coordinates. We
study the effect of this reduction in the number ladder operators acting on
physical states of a system. We analyse the scaler, spinor and vector field
theories carefully to see the effect of changes in the dynamical structure of
these theories from the view point of the reduction of Schrodinger modes in
light-cone coordinates.
