# Contents

## Idea

Besides the forces of electromagnetism and gravity there are two more fundamental gauge fields in the standard model of particle physics.

The weak nuclear force is described by a gauge field with gauge group the special unitary group $SU(2)$ (W-boson, Z-boson). It controls aspects of the beta decay.

The strong nuclear force is described by a gauge field with gauge group the special unitary group $SU(3)$ (QCD (gluon). It governs the interaction between quarks.

## References

Revised on May 16, 2014 11:53:45 by Anonymous Coward (93.194.246.211)