The conservation of charge relates to the mathematical statement of a vanishing divergence of the charge current. Study an example: the conservation of charge for a complex wave function. Conservation of charge can be derived using the infinitesimal change of phase of a complex wave function.
By “conserved” a physicist means there exists a
o conserved quantity and a
o continuity equation for the current and charge.
Isotopic spin has three components.
Study the relation between the energy and momentum of a particle.
- Lorentz transformation
- Wave equation
- Classical field theory
- Complex wave function