Reduced Compton wavelength

Reduced Compton wavelength

The reduced Compton wavelengthƛ (barred lambda) of a particle is defined as its Compton wavelength divided by 2π: $${\displaystyle \lambda \!\!\!{\bar {}}={\frac {\lambda }{2\pi }}={\frac {\hbar }{mc}},}$$ where ħ is the reduced Planck constant. The reduced Compton wavelength is a natural representation of mass on the quantum scale and is used in equations that pertain to inertial mass, such as the Klein–Gordon and Schrödinger equations.