Read More
Date: 13-7-2016
![]()
Date: 13-7-2016
![]()
Date: 9-8-2016
![]() |
Ramp in Square Well
A particle of mass m is bound in a square well where –a/2 < x < a/2.
a) What are the energy and eigenfunction of the ground state?
b) A small perturbation is added, V(x) = 2ε|x|/a. Use perturbation theory to calculate the change in the ground state energy to O(ε).
SOLUTION
a) For a particle bound in a square well that runs from –a/2 < x < a/2, the eigenfunction and eigenvalue for the lowest energy state are
(1)
(2)
The eigenfunction is symmetric and vanishes at the walls of the well.
b) We use first-order perturbation theory to calculate the change in energy from the perturbation:
(3)
|
|
"إنقاص الوزن".. مشروب تقليدي قد يتفوق على حقن "أوزيمبيك"
|
|
|
|
|
الصين تحقق اختراقا بطائرة مسيرة مزودة بالذكاء الاصطناعي
|
|
|
|
|
قسم شؤون المعارف ووفد من جامعة البصرة يبحثان سبل تعزيز التعاون المشترك
|
|
|