Emergence of classicality through spectrum broadcast structures

I will present a brief introduction to Spectrum Broadcast Structures (SBS) and their connection to the quantum-to-classical transition. Spectrum Broadcast Structures are specific, multipartite quantum states encoding a certain operational notion of objectivity. They derive from the quantum Darwinism idea. I will define the states, show how they can be derived from first principles, and discuss their connection to the quantum measurement problem. I will also briefly overview the appearance of SBS in well known models of open quantum systems and comment on their role in the theory.