Types of quantum field thories
What is called Einstein-Yang-Mills theory in physics is the theory/model (in theoretical physics) describing gravity together with Yang-Mills fields such as the electroweak field or the strong nuclear force of quantum chromodynamics. For the special case that the gauge group is the circle group this reproduces Einstein-Maxwell theory.
is the volume form induced by ;
is the scalar curvature of ;
is the Hodge star operator induced by .
|gravity||electroweak and strong nuclear force||fermionic matter||scalar field|
|field content:||vielbein field||principal connection||spinor||scalar field|
|Lagrangian:||scalar curvature density||field strength squared||Dirac operator component density||field strength squared + potential density|
Section Prequantum gauge theory and Gravity in