Analysis of Lattice Size, Energy Density and Denaturation for a One-Dimensional DNA Model

• Autor(a) principal: Slade, Gabriel Gouvea [UNESP]
• Data de Publicação: 2012
• Outros Autores: Ribeiro, Natália Favaro [UNESP], Drigo Filho, Elso [UNESP], Ruggiero, José Roberto [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=18853#.VS_5GPnF8bg; http://hdl.handle.net/11449/122587
• topic: DNA Mechanical Model; Peyrard-Bishop Model; Lattice Size; Thermal Denaturation

There are several mechanical models to describe the DNA phenomenology. In this work the DNA denaturation is stu- died under thermodynamical and dynamical point of view using the well known Peyrard-Bishop model. The thermody-namics analysis using the transfer integral operator method is briefly reviewed. In particular, the lattice size is discussed and a conjecture about the minimum energy to denaturation is proposed. In terms of the dynamical aspects of the model, the equations of motion for the system are integrated and the results determine the energy density where the denatura- tion occurs. The behavior of the lattice near the phase transition is analyzed. The relation between the thermodynamical and dynamical results is discussed.