title: A model coupling vibrational and rotational motion for the DNA molecule.
abstract: We investigate a mechanical model for the DNA molecule using an extension of the Peyrard and Bishop model. In the present model, there are two chains of oscillators linked by a Morse potential, which represent the hydrogen bonds. The rotational and vibrational motions of each base pair are considered and the coupling for these motions are introduced by a nonlinear combination of them in the Morse potential. In this context, thermodynamics and structural properties are discussed.
authors: Departamento de Física, Campus de São José do Rio Preto, UNESP, Rua Cristóvão Colombo, 2265 CEP, 15054-000, São José do Rio Preto, São Paulo, Brazil, rsilvo@gmail.com.
authors: R A S
authors: RA
authors: Silva
authors: E Drigo
authors: ED
authors: Filho
authors: J R
authors: JR
authors: Ruggiero