# Fermi-Pasta-Ulam experiment

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The **Fermi-Pasta-Ulam experiment** ^{[1]} consisted of a one dimensional system composed of 64 particles, whose ends were fixed, and the particles were connected by a selection of forces; quadratic, cubic, and "broken"-linear. Their main finding was that there was an apparent lack of equipartition of energy amongst the available degrees of freedom, even after as many as 10,000 cycles on their fast electronic computing machine (MANIAC I).

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## References[edit]

**Related reading**

- Thierry Dauxois, Michel Peyrard and Stefano Ruffo "The Fermi–Pasta–Ulam 'numerical experiment': history and pedagogical perspectives", European Journal of Physics
**26**pp. S3-S11 (2005) - Mark Buchanan "Capturing chaos", Nature
**435**p. 281 (2005) - "FOCUS ISSUE: THE "FERMI-PASTA-ULAM" PROBLEM-THE FIRST 50 YEARS", Chaos: An Interdisciplinary Journal of Nonlinear Science
**15**March (2005) - G. P. Berman and F. M. Izrailev "The Fermi–Pasta–Ulam problem: Fifty years of progress", Chaos: An Interdisciplinary Journal of Nonlinear Science
**15**015104 (2005) - "The Fermi-Pasta-Ulam Problem: A Status Report" Lecture Notes in Physics
**728/2008**Springer (2008) - Mason A. Porter, Norman J. Zabusky, Bambi Hu, and David K. Campbell "Fermi, Pasta, Ulam and the Birth of Experimental Mathematics", American Scientist
**97**pp. 214-221 (2009) - Thierry Dauxois and Stefano Ruffo "Fermi-Pasta-Ulam nonlinear lattice oscillations", Scholarpedia, 3(8):5538 (2008)
- Bob Rink "Fermi Pasta Ulam systems (FPU): mathematical aspects", Scholarpedia, 4(12):9217 (2009)
- Thierry Dauxois "Fermi, Pasta, Ulam, and a mysterious lady", Physics Today
**61**(1) pp. 55-57 (2008)