Fermi liquid theory

Fermi liquid theory is a model in physics that describes the behavior of interacting particles, particularly electrons in metals at low temperatures. It suggests that these particles can be treated like a collection of independent quasi-particles, each with modified properties, rather than as a chaotic, interacting system. This theory accounts for phenomena like electrical conductivity and heat capacity in metals, helping us understand how interactions between particles affect their overall behavior. It's foundational in condensed matter physics, bridging phenomena observed in simple gases of particles with the complex behavior seen in real materials.