Math @ Duke

Publications [#320438] of Stephanos Venakides
Papers Published
 Deift, P; Kriecherbauer, T; Venakides, S, Forced lattice vibrations: Part II,
Communications on Pure and Applied Mathematics, vol. 48 no. 11
(January, 1995),
pp. 12511298, WILEY [doi]
(last updated on 2019/04/23)
Abstract: This is the second part of a two‐part series on forced lattice vibrations in which a semi‐infinite lattice of one‐dimensional particles {xn}n≧1, (Formula Presented.) is driven from one end by a particle x0. This particle undergoes a given, periodically perturbed, uniform motion x0(t) = 2at + h(yt) where a and γ are constants and h(·) has period 2π. Results and notation from Part I are used freely and without further comment. Here the authors prove that sufficiently ample families of traveling‐wave solutions of the doubly infinite system (Formula Presented.) exist in the cases γ > γ1 and γ1 > γ > γ2 for general restoring forces F. In the case with Toda forces, F(x) = ex, the authors prove that sufficiently ample families of traveling‐wave solutions exist for all k, γk > γ > γk+1. By a general result proved in Part I, this implies that there exist time‐periodic solutions of the driven system (i) with k‐phase wave asymptotics in n of the type (Formula Presented.) with k = 0 or 1 for general F and k arbitrary for F(x) = ex (when k = 0, take γ0 = ∞ and X0 ≡ 0). Copyright © 1995 Wiley Periodicals, Inc., A Wiley Company


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