A model coupling vibrational and rotational motion for the DNA molecule.
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.
Silva
R A S
RA
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.
Filho
E Drigo
ED
Ruggiero
J R
JR