An infinitely deep one-dimensional square well has walls at z = 0 and x = L. Two small perturbing potentials of width a and height V are located L/4, x = (3/4)L, where a is small (a « L/100, say) as shown in Fig. 5.3. Using perturbation inetho ds, estimate the difference in the energy shifts between the n 2 and n= 4 energy levels due to this perturbation. x = 0 Fig. 5.3

An infinitely deep one-dimensional square well has walls at z = 0 and x = L. Two small perturbing potentials of width a and height V are located L/4, x = (3/4)L, where a is small (a « L/100, say) as shown in Fig. 5.3. Using perturbation inetho ds, estimate the difference in the energy shifts between the n 2 and n= 4 energy levels due to this perturbation. x = 0 Fig. 5.3