•Lagrangians
The QED lagrangian:
The QED counterterm lagrangian:
Converted by
Mathematica
(July 10, 2003)
![Lagrangian[QED[1]]](../HTMLFiles/index_10.gif){kind=small}
![-1/4 A^( ) _ (μ ν) . A^( ) _ (μ ν) + Overscript[ψ^( ), _] . γ^μ . (e^( ) A^( ) _ μ . ψ^( ) + i ∂ _ μ ψ^( ) _ ó ^ó ) - Overscript[ψ^( ), _] . ψ^( ) m _ ψ^(ó )](../HTMLFiles/index_11.gif){kind=small}
![Lagrangian[QED[2]]](../HTMLFiles/index_12.gif){kind=small}
![-1/4 (Z _ 3^(0 ) - 1) A^( ) _ (μ ν) . A^( ) _ (μ ν) - δm^(0 ) Z _ 2^(0 ) Overscript[ψ^( ), _] . ψ^( ) + (Z _ 2^(0 ) - 1) (Overscript[ψ^( ), _] . γ^μ . (e^( ) A^( ) _ μ . ψ^( ) + i ∂ _ μ ψ^( ) _ ó ^ó ) - Overscript[ψ^( ), _] . ψ^( ) m _ ψ^(ó ))](../HTMLFiles/index_13.gif){kind=small}