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arxiv: 0810.3460 · v1 · pith:43ESPQ7Bnew · submitted 2008-10-20 · 🧮 math-ph · hep-th· math.MP

Compactons in PT-symmetric generalized Korteweg-de Vries Equations

classification 🧮 math-ph hep-thmath.MP
keywords equationsgeneralizedpt-symmetriccooperequationmomentumshepardsodano
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In an earlier paper Cooper, Shepard, and Sodano introduced a generalized KdV equation that can exhibit the kinds of compacton solitary waves that were first seen in equations studied by Rosenau and Hyman. This paper considers the PT-symmetric extensions of the equations examined by Cooper, Shepard, and Sodano. From the scaling properties of the PT-symmetric equations a general theorem relating the energy, momentum, and velocity of any solitary-wave solution of the generalized KdV equation is derived, and it is shown that the velocity of the solitons is determined by their amplitude, width, and momentum.

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