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Molecular dynamics simulations are used to study structure formation in simple model polymer chains that are subject to excluded volume and torsional interactions. The changing conformations exhibited by chains of different lengths under gradual cooling are followed until each reaches a state from which no further change is possible. The interactions are chosen so that the true ground state is a helix, and a high proportion of simulation runs succeed in reaching this state; the fraction thatdoi:10.1103/physreve.66.011906 pmid:12241383 fatcat:dqlgpfi7wbf5xc2p6lzzi6nnti