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The Induction Phenomenon and Ergodicity in the Anharmonic Lattice Vibration

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TLDR
In this article, it was shown that the induction phenomenon in the exchange of energies of normal modes found by computer experiments is an inherent property of the anharmonic lattice vibration and its behavior obeys the time reversal even after the elapse of the induction period.
Abstract
It is shown that the induction phenomenon in the exchange of energies of normal modes found by computer experiments is an inherent property of the anharmonic lattice vibration and its behavior obeys the time reversal even after the elapse of the induction period. The instability of the normal modes when one mode is excited initially is related to the induction phenomenon, and is discussed by the application of the instability region of the Mathieu function. The exponential orbital separation is also shown to take place after the elapse of the induction period. This guarantees the C-property of the anharmonic lattice vibration.

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Citations
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Exact solutions in the FPU oscillator chain

TL;DR: In this article, the authors present a compact linear mode representation of the Hamiltonian of the FPU system with quartic nonlinearity and periodic boundary conditions, with explicitly computed mode coupling coefficients.
Journal ArticleDOI

Low-Dimensional Solutions in the Quartic Fermi–Pasta–Ulam System

TL;DR: In this article, general expressions for the type I subsets of the Fermi-Pasta-Ulam (FPU)-β system were derived for the induction phenomenon.
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Reversible approach to statistical equilibrium in a nonlinear chain: an ensemble study

TL;DR: In this article, the authors describe the results of the numerical integration of the equations of motion of a 17-particle chain with fixed ends and linear and cubic nearest-neighbour forces.
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Metastable states and energy flow pathway in square graphene resonators.

TL;DR: The results bring fundamental understandings to the Fermi-Pasta-Ulam problem in two-dimensional systems with complex potentials and reveal clearly the physical picture of dynamical interactions between the flexural modes, which will be crucial to the understanding of their abnormal contribution to heat conduction and nonlinear mechanical vibrations.
References
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Journal ArticleDOI

Computer Studies on the Approach to Thermal Equilibrium in Coupled Anharmonic Oscillators. II. One-Dimensional Case

TL;DR: One-dimensional anharmonic lattices with quadratic as well as quartic potentials between nearest neighbors are treated on computer to see the long-time behaviors of the vibration.
Journal ArticleDOI

Nonlinear coupled oscillators: Modal equation approach

TL;DR: In this paper, a one-dimensional system of equimass particles coupled by identical nonlinear springs is studied, where the equations of motion are expressed in terms of the normal coordinates of the corresponding linear system.
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Computer Experiments on Ergodic Problems in Anharmonic Lattice Vibrations

TL;DR: In this paper, a short review of the present status of the ergodic theories is also given and the interrelations among various results of various results are clarified, and the apparent randomness which the system exhibits after elapsing the induction period is, strictly speaking, quasi-stochastic.
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