Abstract

For decades, metallic systems have resisted revealing their liquid-like properties, largely due to the inherent disorder that masks such behaviour. However, recent experimental advances have begun to challenge this long-standing view, exposing intriguing signatures reminiscent of liquids in these highly complex systems. In particular, graphene and its multi-layered versions can be considered promising platforms to observe fingerprints of hydrodynamics. In this talk, we derive the hydrodynamic equations for two-band electronic systems in presence of strong Coulomb interaction, in two and three dimensions. This allows us to investigate the emergence of collective modes and transport and hydrodynamic properties of strongly-interacting electronic systems, offering a new perspective on transport and coherence in ultraclean metals.