Causal signal transmission by quantum fields. I. Response of the harmonic oscillator
classification
🪐 quant-ph
cond-mat.stat-mechmath-phmath.MP
keywords
oscillatorpropertiesquantumclassicalfieldsharmonicresponsebosonic
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It is shown that response properties of a quantum harmonic oscillator are in essence those of a classical oscillator, and that, paradoxical as it may be, these classical properties underlie all quantum dynamical properties of the system. The results are extended to non-interacting bosonic fields, both neutral and charged.
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