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The quantum Rabi model (QRM) is widely regarded as one of the fundamental models of quantum optics. One of its generalizations is the asymmetric quantum Rabi model (AQRM), obtained by introducing a symmetry-breaking term depending on a parameter    $$\varepsilon \in \mathbb {R}$$  ε ∈ R to the Hamiltonian of the QRM. The AQRM was shown to possess degeneracies in the spectrum for values    $$\epsilon \in 1/2\mathbb {Z}$$  ϵ ∈ 1 / 2 Z via the study of the divisibility of the so-called constraint polynomials. In this article, we aim to provide further insight into the structure of Juddian solutions of the AQRM by extending the divisibility properties and the relations between the constraint polynomials with the solution of the AQRM in the Bargmann space. In particular we discuss a conjecture proposed by Masato Wakayama.

Extended Divisibility Relations for Constraint Polynomials of the Asymmetric Quantum Rabi Model