Two-Particle System: Spin 1/2 - Show Operator Change

[lycogen]

Homework Statement

I have a two particle system with both spin 1/2
I have to show that operator (hJ/hbar^2)s₁s₂ changes between singlet and triplet states.

of course h,J and h bar are constants



:shy:

 

[gabbagabbahey]

What have you tried so far?