  We consider the constrained Schelling model of social segregation in which
the utility factor of agents strictly increases and non-local jumps of the
agents are allowed. In the present study, the utility factor u is defined in a
way such that it can take continuous values and depends on the tolerance
threshold as well as the fraction of unlike neighbours. Two models are
proposed: in model A the jump probability is determined by the sign of u only
which makes it equivalent to the discrete model. In model B the actual values
of u are considered. Model A and model B are shown to differ drastically as far
as segregation behaviour and phase transitions are concerned. In model A,
although segregation can be achieved, the cluster sizes are rather small. Also,
a frozen state is obtained in which steady states comprise of many unsatisfied
agents. In model B, segregated states with much larger cluster sizes are
obtained. The correlation function is calculated to show quantitatively that
larger clusters occur in model B. Moreover for model B, no frozen states exist
even for very low dilution and small tolerance parameter. This is in contrast
to the unconstrained discrete model considered earlier where agents can move
even when utility remains same. In addition, we also consider a few other
dynamical aspects which have not been studied in segregation models earlier.
