Systems of several particles
Keith Hannabuss
Abstract
Abstract One often wants to study systems, such as the helium atom of Sections 12.3 and 14.2, that contain more than one particle. We describe two-particle systems by a wave function, ψ (r1, r2), where r1 is the position of the first particle, and r2 that of the second. If we interchange the two particles, then the wave function becomes ψ (r2, r1). (16.1)