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Null bootstrap for non-Hermitian Hamiltonians
Published 9 Feb 2022 in hep-th, cond-mat.stat-mech, cond-mat.str-el, hep-lat, and quant-ph | (2202.04334v4)
Abstract: A stable physical system has an energy spectrum that is bounded from below. For quantum systems, the dangerous states of unboundedly low energies should decouple and become null. We propose the principle of nullness and apply it to the bootstrap study of Hermitian and non-Hermitian anharmonic oscillators.
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