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cse • paper_2 • quantum_mechanicscse-2026-subject-05-004

Pauli spin matrices — UPSC CSE 2026 Physics PYQ

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Find the eigenvalues and eigenfunctions of a system described by Hamiltonian H = a e^{b \sigma_x}, where a, b are constants and \sigma_x is the x-component of Pauli matrix \vec{\sigma}.

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