4 papers
Propagator for an Aharonov-Bohm-Coulomb system
D. K. Park, Sahng-Kyoon Yoo, Soo-Young Lee +4
The propagator of three-dimensional Aharonov-Bohm-Coulomb system is calculated by following the Duru-Kleinert method. It is shown that the system is reduced to two independent two…
Test of dilute gas approximation in quantum mechanical model
D. K. Park, Soo-Young Lee, Jae-Rok Kahng +4
The validity of dilute gas approximation is explored by making use of the large-sized instanton in quantum mechanical model. It is shown that the Euclidean probability amplitude de…
Effect of Anharmonicity on the WKB Energy Splitting in a Double Well Potential
Chang Soo Park, Soo-Young Lee, Jae-Rok Kahng +4
We investigate the effect of anharmonicity on the WKB approximation in a double well potential. By incorporating the anharmonic perturbation into the WKB energy splitting formula w…
Instantonic approach to triple well potential
Soo-Young Lee, Jae-Rok Kahng, Sahng-Kyoon Yoo +4
By using a usual instanton method we obtain the energy splitting due to quantum tunneling through the triple well barrier. It is shown that the term related to the midpoint of the…