Ginzburg-Landau theory

Ginzburg-Landau theory is a mathematical framework used to describe how certain materials, particularly superconductors, transition between different states, such as from normal to superconducting. It focuses on order parameters, which represent the state of the system, and captures essential behaviors near the transition point. By analyzing energy and fluctuations, it helps explain how these materials can conduct electricity without resistance. This theory not only aids in understanding superconductivity but also applies to other phase transitions in physics, such as magnetism and liquid crystals, making it a vital tool in condensed matter physics.