Gauging the half-maximal trombone in 4D

Master thesis
Research group: 
String Cosmology
Harm Jan Prins

In order to get non-abelian gauge symmetries in supergravity theories one can gauge subgroups of the global symmetry groups inherited from their higher dimensional origins (compacti ed on n-tori). Apart from these large symmetry groups it is also possible to gauge the local scaling symmetry (the trombone) present in these theories. In 4D this has been done for maximal supergravity, here the half-maximal case is investigated. In particular the main constraints, following from the requirements of supersymmetry and consistency, are derived. Though the equations of motions are not derived here, it can be expected that it, as in the maximal case, will not be possible to formulate an action for this theory.

Publication date: 
September, 2014