A key point to understand the glass transition is the relationship between structural and
dynamic behavior experienced by a glass former when it approaches T g. In this work, the
relaxation in a simple bead-spring polymer system in the supercooled regime near its glass
transition temperature was investigated with molecular dynamic simulations. We develop a
new manner to look at the dynamic length scales in a supercooled polymeric system,
focusing on correlated motion of particles in an isoconfigurational ensemble (that is …