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Bright solitary waves as charge transport in DNA: A variational approximation
Author(s) -
Belobo Belobo Didier,
Dang Koko Adamou
Publication year - 2020
Publication title -
biopolymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 125
eISSN - 1097-0282
pISSN - 0006-3525
DOI - 10.1002/bip.23346
Subject(s) - charge (physics) , amplitude , chirp , energy (signal processing) , dna , chemistry , energy transfer , phase (matter) , physics , classical mechanics , statistical physics , computational physics , quantum mechanics , molecular physics , laser , biochemistry
Modeling energy and charge transfer in DNA has been a challenging issue because of many conformations DNA can take. Due to its simplicity, we propose a discrete variational approach to study the charge transfer mechanism in DNA based on the Holstein‐Su‐Schrieffer‐Heeger model. It is shown that bright solitary waves may propagate through the DNA and the variational approximation provides explicit relations between experimental parameters and important characteristics of the waves such as amplitude, width, chirp and homogenous phase, and energy. Our analytical predictions are confirmed by intensive numerical simulations with a good accuracy.