title: Comment on "Modeling the electrical conduction in DNA nanowires: Charge transfer and lattice fluctuation theories".
abstract: In a recent paper [S. Behnia and S. Fathizadeh, Phys. Rev. E 91, 022719 (2015)10.1103/PhysRevE.91.022719] an analytical approach is proposed for the investigation of the conductivity properties of DNA. The authors use mean Lyapunov exponent methods as the backbone of their approach and try to interpret properties of the system based on its behavior. Their interpretation regarding the change in nature of the mean Lyapunov exponent at the denaturation temperatures and discussions of stability and instability based on the mean Lyapunov exponent method are questioned. Moreover there is misunderstanding between mean Lyapunov exponent and Lyapunov exponent.
authors.affiliation: Soft Matter Lab, Physics Department, Bilkent University, Cankaya, 06800 Ankara, Turkey.
authors.forename: M
authors.initials: M
authors.lastname: Panahi
authors.affiliation: Department of Physics, Alzahra University, Tehran 19938, Iran.
authors.forename: M
authors.initials: M
authors.lastname: Chitsazanmoghaddam
mesh_terms: D004247:DNA; D053770:Nanowires; D017711:Nonlinear Dynamics
chemical_list: D004247:DNA