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WORK ON PROGRESS : Romain's method

Long-range, same parameters and initial magnetization, different system size. Shielding time increases with the system size.

Long-range, same system size and initial magnetization. First line: same long-range coupling and increasing short range coupling from the left to the right. Velocity depends on the short-range coupling. Second line : same short range coupling and increasing long-range coupling from the left ot the right. Difficult to say, more statistics is needed.

Long-range, same system size. Changing initial magnetization (and energy per particle). Something happens at the TNT

Short-range, same initial magnetization. Changing system size : propagation always within the linear cone.

Same number of particles and initial magnetization. Changing interaction range from long to short range. Propagation up to the shielding time doesn't depend on alpha. In the short range case something strange occurs at alpha=3. For nearest-neighbor (alpha=100) propagation is faster.