Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2005-01-27
JHEP0509:025,2005
Physics
High Energy Physics
High Energy Physics - Theory
Latex, 19 pages, minor changes, to appear in JHEP
Scientific paper
10.1088/1126-6708/2005/09/025
We obtain the pp-waves of D=5 and D=4 gauged supergravities supported by $U(1)^3$ and $U(1)^4$ gauge field strengths respectively. We show that generically these solutions preserve 1/4 of the supersymmetry, but supernumerary supersymmetry can arise for appropriately constrained harmonic functions associated with the pp-waves. In particular it implies that the solutions are independent of the light-cone coordinate $x^+$. We also obtain the pp-waves in the Freedman-Schwarz model.
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