arXiv subjects

Sahng-Kyoon Yoo

Publications and source records attributed to Sahng-Kyoon Yoo.

20 records · Page 2Linked to original sources

arXiv1996

Effect of Anharmonicity on the WKB Energy Splitting in a Double Well Potential

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 we show that the WKB approximation can be greatly improved in the region over which the tunneling is appreciable. We also observe that the usual WKB results can be obtained from our formalism as a limiting case in which the two potential minima are far apart.

quant-ph↗

arXiv1996

Instantonic approach to triple well potential

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 energy splitting in propagator is quite different from that of double well case, in that it is proportional to the algebraic average of the frequencies of the left and central wells.

quant-ph↗