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Selected chain stretch relaxation trajectories (circles) and ⟨X(t)⟩ (solid line) showing non-looped (a), relaxed loops (b), and un-relaxed loops (c) for N = 1000, P/σm = 25, H/P = 1. Trajectories in channels with H/P = 9.9 (triangles) are shown in (a).
