Tagged Questions
5
votes
1answer
154 views
Huge confusion with Fermions and Bosons and how they relate to total spin of atom
I am supremely confused when something has spin or when it does not. For example, atomic Hydrogen has 4 fermions, three quarks to make a proton, and 1 electron. There is an even number of fermions, ...
1
vote
0answers
96 views
Does the electron have spin in it's own reference frame?
In our atomic physics class, we saw that the spin-orbit coupling term arises from the scalar product of the magnetic moment of the electron (proportional to its spin), and the magnetic field created ...
3
votes
1answer
124 views
Spin-orbit coupling constant for rubidium
I have come across the following question in my course notes:
The $5s\to 5p$ transition in rubidium is split into two components with wavelengths of 780nm and 795nm respectively. For the $5p$ state, ...
1
vote
3answers
139 views
In solving the hydrogen atom, how to see intuitively in advance that the spin effects to the energy spectrum can be ignored?
When the hydrogen atom is solved in QM books spin is usually ignored because its effect is to add tiny piece to the energy. My question is, is there a way to see this in advance, to see that if we ...
3
votes
1answer
310 views
Why and how is nondegenerate perturbation theory used for time evolution under $\vec{L}.\vec{S}$ coupling?
Let us say that we start with an electron which is in a spin up state and has a spatial wave-function of the form $xf(r)$. Then one turns on a perturbation of the form ...
