Related papers: General theory of cavity-mediated interactions between low-energy matter excitations

General theory of cavity-mediated interactions between low-energy matter excitations

URL: http://arxiv.org/abs/2407.19478v2
Date: Fri, 18 Oct 2024 13:29:49 GMT
Title: General theory of cavity-mediated interactions between low-energy matter excitations
Authors: Carlos J. Sánchez Martínez, Frieder Lindel, Francisco J. García-Vidal, Johannes Feist,
Abstract summary: cavity quantum electrodynamics engineering has been suggested as a way to enhance low-energy matter properties. We investigate the effective interactions between low-energy matter excitations induced by the off-resonant coupling with cavity electromagnetic modes.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: The manipulation of low-energy matter properties such as superconductivity, ferromagnetism and ferroelectricity via cavity quantum electrodynamics engineering has been suggested as a way to enhance these many-body collective phenomena. In this work, we investigate the effective interactions between low-energy matter excitations induced by the off-resonant coupling with cavity electromagnetic modes. We extend previous work by going beyond the dipole approximation accounting for the full polarization and magnetization densities of matter. We further include the often neglected diamagnetic interaction and, for the cavity, we consider general linear absorbing media with possibly non-local and non-reciprocal response. We demonstrate that, even in this general scenario, the effective cavity-induced interactions between the matter degrees of freedom are of electrostatic and magnetostatic nature. This confirms the necessity of a multimode description for cavity engineering of matter systems where the low-energy assumption holds. Our findings provide a theoretical framework for studying the influence of general optical environments on extended low-energy matter excitations.