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arXiv · 1503.05636

Comment on "Solvability of the two-photon Rabi Hamiltonian"

Andrzej J. Maciejewski·Maria Przybylska·Tomasz Stachowiak
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Abstract

An implicit formula for the spectrum of the two-photon Rabi model was presented by Travenec in Phys. Rev. A 85, 043805 (2012) in analogy to the method of Braak [Phys. Rev. Lett. 107, 100401 (2011)]. The spectrum is given by common zeros of four functions $G_c(z, E)$ taken with a fixed value of $z\in\mathbb{C}$. We point out that all the $G_c(z,E)$ functions defined by Travenec are identically zero, thus the spectrum is not in fact given by their roots.

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Andrzej J. Maciejewski, Maria Przybylska, Tomasz Stachowiak. 2015-03-19. Comment on "Solvability of the two-photon Rabi Hamiltonian". https://doi.org/10.1103/physreva.91.037801

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