A positronium atom is a hydrogen-like atom with a positron (mass m = me, charge +e, spin 1/2) as a nucleus and an electron bound to it. The spin-spin interation of positronium can be described by a Hamiltonian H = A ~ 2 S1 · S2 Write down the energy levels of this system, according to the total spin S of the atom.
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A positronium atom is a hydrogen-like atom with a positron (mass m = me, charge +e, spin 1/2) as a nucleus and an electron bound to it. The spin-spin interation of positronium can be described by a Hamiltonian H = A ~ 2 S1 · S2 Write down the energy levels of this system, according to the total spin S of the atom.
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