Localized Modes in the Long-Time Behavior of Anharmonic Lattices
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概要
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The time evolution of pure anharmonic lattices with quartic:, positive lattice anharmonicity is studied by transforming nonlinear differential-difference equations intononlinear integro-difference equations with kernels given by lattice Green's functions.Such a formulation enables us to treat one-, two-, and three-dimensional lattices onequal footing. By studying the asymptotic properties for t= c/) of the equations, it isshown that a long-lived, spatially localized oscillatory mode can exist under certainconditions for each of these tlaree cases. A quasi-nonergodic behavior of anharmoniclattices obtained here may be of different nature from that I'ound by Fermi, Pasta,and Ulam.
- 社団法人日本物理学会の論文
- 1990-05-15
著者
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Takeno Shozo
Physics Laboratory Faculty Of Engineering And Desigh Kyoto Institute Of Technology
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Takeno Shozo
Physics Laboratory Department Of Electronics Faculty Of Engineering And Design Kyoto Institute Of Te
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