Vibrational Dressing of Collective Molecular Polaritons: A Scalable Green's-Function Theory
We develop a scalable Green's-function theory of vibrationally dressed molecular-polariton absorption in the Holstein--Tavis--Cummings model. Within the self-consistent Born approximation (SCBA), the ground-state linear response of $N$ identical molecules coupled to one cavity mode follows from a $2\times2$ cavity--bri...