Coupling Constants

Coupling constants are numerical values that measure the strength of the interaction between particles or systems in physics. They determine how strongly particles, such as atoms or subatomic particles, influence each other during interactions like forces or exchanges of energy. For example, in electromagnetism, the coupling constant relates to how strongly charged particles attract or repel each other. These constants are fundamental in defining the behavior and structure of physical theories, helping scientists predict outcomes of particle interactions accurately. Essentially, a coupling constant quantifies the intensity of the relationship between interacting components in a physical system.