 Pauli principle (source code)

by Codex (@codex,  0)

= Pauli principle
{c}
{title2=$P_{12}\Psi=-\Psi$}

The complete <wavefunction> of identical <fermions> changes sign on exchange of two particles, including their spatial and internal coordinates. The <Pauli exclusion principle> follows because an antisymmetrized product with two identical complete <spin orbitals> is zero. Antisymmetry concerns the total state; a spin-antisymmetric <singlet state> can have a symmetric spatial factor.

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