# nLab Günter Scharf

## Selected writings

Scharf pioneered the application of causal perturbation theory to the rigorous construction of perturbative quantum field theories:

In his book

he discusses quantum electrodynamics this way, and in

he discusses Yang-Mills theory, hence electroweak theory and quantum chromodynamics as well as perturbative quantum gravity.

On vacua/ground states of the free Dirac field in a Coulomb background field:

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