uniform magnetic field B0
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At time t = 0, an electron and a positron are formed in a state with total spin
If interaction between the electron and the positron may be neglected, show that the spin Hamiltonian of the system may be written as Ĥ = ω0(Ŝ1z - Ŝ2z), where Ŝ1 is the spin operator of the electron, Ŝ2 is the spin operator of the positron, and ω0 is a constant. Show all work and explanations please
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