2022
DOI: 10.48550/arxiv.2208.01532
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Comparing Hermitian and Non-Hermitian Quantum Electrodynamics

Abstract: In recent years, non-Hermitian quantum physics has gained a lot in popularity in the quantum optics and condensed matter communities in order to model quantum systems with varying symmetries. In this paper, we identify a non-standard inner product that implies bosonic commutator relations for local electric and magnetic field observables and leads to a natural local biorthogonal description of the quantised electromagnetic field. When comparing this description with an alternative local Hermitian description, … Show more

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