Reentrance of the Localization in a Stochastic Tight-Binding Model

M.O. CÁCERES; A.K. CHATTAH

PHYSICS LETTERS A

Elsevier

Año: 2000 vol. 276 p. 272 - 272

0375-9601

font face="Times New Roman" size="1"> We find the exact dynamics — in mean value — for a one-dimensional tight-binding particle in presence of a dynamical impurity (dichotomic process). Our results can be interpreted in terms of a "quasi-particle", representing the excitation of the system interacting with its surrounding. Then a "reentrance" in the energy of this quasi-particle appears as a competitive phenomena between the intensity against the frequency rate of the dichotomic impurity.