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Application of perturbation theory to elastic models of DNA
, Article Proceedings of the 13th Regional Conference on Mathematical Physics, Antalya, Turkey ; October , 2013 , Pages 241-253 ; 9789814417525 (ISBN) ; Ejtehadi, M. R ; Sharif University of Technology
2013
Abstract
In this paper, we demonstrate the applicability of the perturbation methods to different elastic models of DNA molecule. Two different kinds of perturbation methods are presented to find a first approximation for the force-extension characteristic of DNA in the anisotropic wormlike chain model, and the persistence length of DNA in the asymmetric elastic rod model. In both cases we show that it is meaningful to use the perturbation theory, and a first-order calculation is enough to find the result with an acceptable accuracy