# Quantum physics functions (plasmapy.formulary.quantum)¶

Functions for quantum parameters, including electron degenerate gases and warm dense matter.

## Functions¶

 chemical_potential(n_e, T) Calculate the ideal chemical potential. deBroglie_wavelength(V, particle) Calculates the de Broglie wavelength. Ef_(n_e) Alias to Fermi_energy(). Fermi_energy(n_e) Calculate the kinetic energy in a degenerate electron gas. lambdaDB_(V, particle) Alias to deBroglie_wavelength(). lambdaDB_th_(T_e) Alias to thermal_deBroglie_wavelength(). Thomas_Fermi_length(n_e) Calculate the exponential scale length for charge screening for cold and dense plasmas. thermal_deBroglie_wavelength(T_e) Calculate the thermal deBroglie wavelength for electrons. Wigner_Seitz_radius(n) Calculate the Wigner-Seitz radius, which approximates the inter- particle spacing.