Light-Matter Response in Nonrelativistic Quantum Electrodynamics.

ABSTRACT: We derive the full linear-response theory for nonrelativistic quantum electrodynamics in the long wavelength limit and provide a practical framework to solve the resulting equations by using quantum-electrodynamical density-functional theory. We highlight how the coupling between quantized light and matter changes the usual response functions and introduces cross-correlated light-matter response functions. These cross-correlation responses lead to measurable changes in Maxwell's equations due to the quantum-matter-mediated photon-photon interactions. Key features of treating the combined matter-photon response are that natural lifetimes of excitations become directly accessible from first-principles, changes in the electronic structure due to strong light-matter coupling are treated fully

SUBMITTER: Flick J 

PROVIDER: S-EPMC6875898 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature