Two ions 1 and 2 are at fixed separation, with spin angular momentum operators S1 and S2 have the interaction Hamiltonian H = -(S1 · S2) where B>0. The quantum numbers are s1 and s2. Which of the following is the energy of the ground state of the system? () S1 (81+1)+82(82+1) (81+82)(81+s2+1) O -Bs182 • ((81 + 82)($1 + ? - B[s1(81 + 1) + 82(s

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Techniques and applications of quantum theory

Quantum theory, often known as quantum physics, is the foundation of modern physics and encompasses the nature and behavior of matter and energy at the atomic and molecular levels. As the exact nature and behavior of atomic and subatomic particles are impossible to determine, the laws of classical physics do not apply to this discipline. As a result, quantum field theory is primarily based on assumptions and probabilities.