Exact WKB analysis produces median-summed spectra and an algebraic equation for the exceptional point of PT-symmetry breaking in the inverted triple-well system.
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A quartic extension of the twisting-and-turning Hamiltonian generates new unstable fixed points that accelerate short-time amplification of quantum fluctuations, yielding enhanced sensitivity within accessible coherence times.
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Exact WKB analysis of inverted triple-well: resonance, PT-symmetry breaking, and resurgence
Exact WKB analysis produces median-summed spectra and an algebraic equation for the exceptional point of PT-symmetry breaking in the inverted triple-well system.
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Instability-Enhanced Quantum Sensing with Tunable Multibody Interactions
A quartic extension of the twisting-and-turning Hamiltonian generates new unstable fixed points that accelerate short-time amplification of quantum fluctuations, yielding enhanced sensitivity within accessible coherence times.