Relativistic Ladder Operators for the Three-Dimensional Harmonic Oscillator
Abstract
The quantum constraint equations for a relativistic three-dimensional harmonic oscillator are shown to find concise expression in terms of Lorentz covariant ladder operators. These ladder operators consist of two conjugate 4-vectors that are each constrained to generate three linearly independent combinations of ladder operator components for raising and lowering the eigenstates of the oscillator. Correspondence to the Schr\"odinger equation for the harmonic oscillator in the non-relativistic limit is demonstrated.
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