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Article overview
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Order of the phase transition in models of DNA thermal denaturation | | Nikos Theodorakopoulos
; Thierry Dauxois
; Michel Peyrard
; | | Date: |
28 Apr 2000 | | Journal: | Physical Review Letters 85, 6 (2000) | | Subject: | Statistical Mechanics; Biological Physics; Biomolecules | cond-mat.stat-mech physics.bio-ph q-bio.BM | | Affiliation: | Theoretical and Physical Chemistry Institute, Athens, Greece), Thierry Dauxois and Michel Peyrard (Ecole Normale Superieure de Lyon, France | | Abstract: | We examine the behavior of a model which describes the melting of double-stranded DNA chains. The model, with displacement-dependent stiffness constants and a Morse on-site potential, is analyzed numerically; depending on the stiffness parameter, it is shown to have either (i) a second-order transition with "nu_perpendicular" = - beta = 1, "nu_parallel" = gamma/2 = 2 (characteristic of short range attractive part of the Morse potential) or (ii) a first-order transition with finite melting entropy, discontinuous fraction of bound pairs, divergent correlation lengths, and critical exponents "nu_perpendicular" = - beta = 1/2, "nu_parallel" = gamma/2 = 1. | | Source: | arXiv, cond-mat/0004487 | | Other source: | [GID 459447] pmid10991145 | | Services: | Forum | Review | PDF | Favorites | |
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