(Phys.org)—Ever since the early days of quantum mechanics, the decay dynamics of unstable quantum systems has been thought to follow an exponential decay law, just like the one used to describe ...

Recovery from depression often demonstrates a nonlinear pattern of treatment response, where the largest reduction in symptoms is observed early followed by smaller improvements. This study ...

Collective spontaneous emission is theoretically and experimentally investigated for an inhomogeneously broadened ensemble of emitters coupled to a metamaterial mode in one case and core-shell ...