Journal
DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS
Volume 40, Issue 8, Pages 4689-4703Publisher
AMER INST MATHEMATICAL SCIENCES-AIMS
DOI: 10.3934/dcds.2020198
Keywords
Quintic BBM equation; periodic waves; Picard-Fuchs equation; Abelian integral
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Funding
- NSF of China [11971495, 11801582]
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This paper dealt with the existence of periodic waves for a perturbed quintic BBM equation by using geometric singular perturbation theory. By analyzing the perturbations of the Hamiltonian vector field with a hyperelliptic Hamiltonian of degree six, we proved that periodic wave solutions persist for sufficiently small perturbation parameter. It is also proved that the wave speed c(0)(h) is decreasing on h by analyzing the ratio of Abelian integrals, where h is the energy level value. Moreover, the upper and lower bounds of the limit wave speed are given.
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