Localized states due to the coupling of exciton with the coupled lattice oscillators

Bikash Chandra Gupta

Discrete nonlinear Schröginger equation (DNLS) of the form, $i\frac{d{C}_n}{dt}$ = $C_{n+1}$ + $C_{n-1}$ - ${\chi }_n[|C_{n+1}{|}^2+|C_{n-1}{|}^2-2|C_n{|}^2]C_n$ is used to study the f…