We study the many-quanta problem of an intramolecular vibrational excitation interacting with optical phonons, that may represent the nonlinearity from intrinsic electron-lattice interactions. In the adiabatic limit we calculate numerically the …
We consider electron transfer (ET) along β-sheet forms of proteins. The secondary structure of the β-sheet proteins is modelled by a two-dimensional oscillator network whose constituents represent peptide units. Covalent and hydrogen bonds between …
We study the semiclassical Holstein model with a hard nonlinear on-site potential in one, two, and three dimensions. Using stationary solutions, we obtain the ground-state phase diagram as a function of the parameter characterizing the nonlinearity …
We numerically investigate energy relaxation in discrete nonlinear lattices in one and two spatial dimensions. We find that energy relaxation follows a stretched exponential law, and we study its dependence on the initial temperature. We attribute …