ABSTRACT
It will be convenient to use the form of the Dirac equation with the γ’s when solving for the free-particle wave functions γ μ ( i ∇ μ − eA μ ) Ψ = m Ψ https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780429493249/61533138-873a-4296-94b7-142295055bcb/content/eq336.tif"/>
