Minimum-uncertainty coherent states of the hyperbolic and trigonometric Rosen–Morse oscillators

A mixed supersymmetric-algebraic approach is employed to generate the minimum uncertainty coherent states of the hyperbolic and trigonometric Rosen–Morse oscillators. The method proposed produces the superpotentials, ground state eigenfunctions and associated eigenvalues as well as the Schrödinger equation in the factorized form amenable to direct treatment in the algebraic or supersymmetric scheme. In the standard approach the superpotentials are calculated by solution of the Riccati equation for the given form of potential energy function or by differentiation of the ground state eigenfunction. The procedure applied is general and permits derivation the exact analytical solutions and coherent states for the most important model oscillators employed in molecular quantum chemistry, coherent spectroscopy (femtochemistry) and coherent nonlinear optics.

EVALUATING COUPLING OF ADSORBED MOLECULES TO THEIR ENVIRONMENT IN SCANNING TUNNELING MICROSCOPY

We present a new theoretical approach to determine the interaction energy due to the coupling of adsorbed molecules to their environment in scanning tunneling microscopy. In fact, the above coupling energy is estimated by assuming the involved adsorbed molecules as Morse oscillators and their environment (electrodes, leads) as external reservoir.