Hi, I was looking for a quantum physics phenomenon including in quantum field theory where the solutions of a related phase-plane system (i.e. the harmonic oscillator) have a spiral sink in the phase portrait?(adsbygoogle = window.adsbygoogle || []).push({});

The harmonic oscillator has saddle points in the phase-portrait, given its eigenvalue signs, however is there a phenomenon one can confirm has a spiral sink (attractor) and no singularities for its general solution form?

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# A Quantum physics phenomena that have spiral-phase portraits?

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