Moving breathers in a bent DNA model

We study the properties of moving breathers in a bent DNA model with short range interaction, due to the stacking of the base pairs, and long range interaction, due to the finite dipole moment of the bonds within each base pair. We show that the movement of a breather is hindered by the bending of the chain analogously to a particle in a potential barrierThis work was supported by the European Commission under the RTN project LOCNET, HPRN-CT- 1999-00163. FPDI grant from Junta de Andalucí