Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2012-01-13
JHEP04(2012)020
Physics
High Energy Physics
High Energy Physics - Theory
Minor changes, references added
Scientific paper
10.1007/JHEP04(2012)020
We find necessary and sufficient conditions for gauge invariance of the action of Double Field Theory (DFT) as well as closure of the algebra of gauge symmetries. The so-called weak and strong constraints are sufficient to satisfy them, but not necessary. We then analyze compactifications of DFT on twisted double tori satisfying the consistency conditions. The effective theory is a Gauged DFT where the gaugings come from the duality twists. The action, bracket, global symmetries, gauge symmetries and their closure are computed by twisting their analogs in the higher dimensional DFT. The non-Abelian heterotic string and lower dimensional gauged supergravities are particular examples of Gauged DFT.
Graña Mariana
Marques Diego
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