The fundamental principle is that massive particles exhibit wave-particle duality described by a complex-valued wave function $\psi$, where physical observables such as probability density are derived from the product of the wave function and its complex conjugate ($\psi^* \psi$). This framework enforces Heisenberg's uncertainty principle, restricting simultaneous precise knowledge of position and momentum while quantizing angular momentum into discrete units of $\hbar$. These concepts constitute the theoretical foundation of quantum mechanics within particle physics.
The fundamental principle is that massive particles exhibit wave-particle duality described by a complex-valued wave function $\psi$, where physical observables such as probability density are derive…