most citedHigher time-derivative theories from space-time interchanged integrable field theories

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math-ph2025

Three-dimensional ghost-free representations of the Pais-Uhlenbeck model from Tri-Hamiltonians

Alexander Felski, Andreas Fring, Bethan Turner

We present a detailed analysis of the sixth-order Pais-Uhlenbeck oscillator and construct three-dimensional ghost-free representations through a Tri-Hamiltonian framework. We ident…