Bound States in Exactly Solvable Polaritonic Models

We study a one-dimensional scalar model for an effective-mass quasiparticle field coupled to a continuum of two-level atoms with at most one excitation present. We prove a general theorem on the existence of bound states under sign-definite spatially localized perturbations of constant atomic density and analyze the bound states for several exactly solvable examples. --- Source: arXiv:2608.23535v1 - http://arxiv.org/abs/2608.23535v1 PDF: https://arxiv.org/pdf/2608.23535v1 Original Link: http://a...