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- Matej Pavšič
- Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
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説明
<jats:p>We review the occurrence of negative energies in Pais–Uhlenbeck oscillator. We point out that in the absence of interactions, negative energies are not problematic neither in the classical nor in the quantized theory. However, in the presence of interactions that couple positive and negative energy degrees of freedom, the system is unstable, unless the potential is bounded from below and above. We review some approaches in the literature that attempt to avoid the problem of negative energies in the Pais–Uhlenbeck oscillator.</jats:p>
収録刊行物
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- International Journal of Geometric Methods in Modern Physics
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International Journal of Geometric Methods in Modern Physics 13 (09), 1630015-, 2016-09-20
World Scientific Pub Co Pte Lt