PROPERTIES OF STRONG-COUPLING POLARON IN QUANTUM RING

On the condition of electron-LO-phonon strong coupling,the eigenenergy and eigenfunction of the ground state of the electron in quantum ring are obtained by solving precisely the time-independent Schrdinger equation.Numerical calculations indicate that the ground state energy increases with increasing the inner radius(or decreasing outer radius) of the quantum ring,and it decreases with increasing the electron-LO-phonon coupling strength.The mean number of phonon increases with increasing the inner radius(or decreasing outer radius) of the quantum ring,and it increases with increasing the electron-LO-phonon coupling strength.