2279 K
20 pp.
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TitleStudies of Nonlinear Problems. I
Author(s)Fermi, E.; Pasta, J.; Ulam, S.
Publication DateMay 1955
Report NumberLA-1940
Unique IdentifierACC0041
Other NumbersOSTI ID: 4376203
Research OrgLos Alamos Scientific Laboratory [Los Alamos National Laboratory (LANL)], New Mexico
Contract NoW-7405-Eng-36
Sponsoring OrgAtomic Energy Commission
Other InformationWork was also done by Mary Tsingou, who provided the computer coding algorithm, ran the computations on the Los Alamos MANIAC, and contributed some of the figures contained in the report.
SubjectMineralogy, Metallurgy, and Ceramics; Computers; Energy; Equations; Interactions; Many Body Problem; Nuclear Models; Nuclear Theory
Related Web PagesEnrico Fermi and the First Self-Sustaining Nuclear Chain Reaction
AbstractA one-dimensional dynamical system of 64 particles with forces between neighbors containing nonlinear terms has been studied on the Los Alamos computer MANIAC I. The nonlinear terms considered are quadratic, cubic, and broken linear types. The results are analyzed into Fourier components and plotted as a function of time. The results show very little, if any, tendency toward equipartition of energy among the degrees of freedom.
2279 K
20 pp.
View Document 

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