File:Fermi–Pasta–Ulam–Tsingou recurrence preview.gif

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Fermi–Pasta–Ulam–Tsingou_recurrence_preview.gif ‎(183 × 242 pixels, file size: 6.62 MB, MIME type: image/gif, looped, 2,251 frames, 2 min 15 s)

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current20:08, 21 March 2020Thumbnail for version as of 20:08, 21 March 2020183 × 242 (6.62 MB)commons>Bürgerentscheid== {{int:filedesc}} == {{Information |Description={{en|1=In any linear system energy in a mode stays in that mode. As such a linear system can never thermalize. The presence of a nonlinearity allows for the energy to move from mode to mode, but it was realized in the mid '50s that this is not enough to guarantee thermalization. In fact an elastic chain (which is a crude but effective model of a crystal) with a small quadratic extra term initially distributes the energy among its modes, but if...

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