Numerical study on a disordered model for DNA denaturation transition
arXiv:cond-mat/0504080 · doi:10.1103/PhysRevE.73.011911
Abstract
We study numerically a disordered version of the model for DNA denaturation transition (DSAW-DNA) consisting of two interacting SAWs in 3d, which undergoes a first order transition in the homogeneous case. The two possible values eAT and eGC of the interactions between base pairs are taken as quenched random variables distributed with equal probability along the chain. We measure quantities averaged over disorder such as the energy density, the specific heat and the probability distribution of the loop lengths. When applying the scaling laws used in the homogeneous case we find that the transition seems to be smoother in presence of disorder, in agreement with general theoretical arguments. Nevertheless we can not rule out the possibility of a still first order transition.
Latex, 25 pages including 12 postscript figures, published revised version (discussion enlarged)
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- Random walks and polymers in the presence of quenched disorder
- Theoretical and Experimental Investigations of DNA Open States
- Numerical evidence for relevance of disorder in a Poland-Scheraga DNA denaturation model with self-avoidance: Scaling behavior of average quantities
- Strong Disorder Renewal Approach to DNA denaturation and wetting : typical and large deviation properties of the free energy
- Mapping between the order of thermal denaturation and the shape of the critical line of mechanical unzipping in 1-dimensional DNA models
- Influence of Media Disorder on DNA Melting: A Monte Carlo Study
- Numerical study of DNA denaturation with self-avoidance: pseudo-critical temperatures and finite size behaviour
- Random wetting transition on the Cayley tree : a disordered first-order transition with two correlation length exponents
- Random polymers and delocalization transitions