Renormalisation group determination of the order of the DNA denaturation transition

Details Renormalisation group determination of the order of the DNA denaturation transition Renormalisation group determination of the order of the DNA denaturation transition

2010-02-19

arxiv.org/abs/1002.3690v1

Physics

Condensed Matter

Statistical Mechanics

6 pages; no figures; to appear in Europhysics Letters

Scientific paper

We report on the nature of the thermal denaturation transition of homogeneous DNA as determined from a renormalisation group analysis of the Peyrard-Bishop-Dauxois model. Our approach is based on an analogy with the phenomenon of critical wetting that goes further than previous qualitative comparisons, and shows that the transition is continuous for the average base-pair separation. However, since the range of universal critical behaviour appears to be very narrow, numerically observed denaturation transitions may look first-order, as it has been reported in the literature.

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