Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1997-04-24
Nucl.Phys. B507 (1997) 553-570
Physics
High Energy Physics
High Energy Physics - Theory
23 pages, LaTex, 1 figure
Scientific paper
10.1016/S0550-3213(97)00590-7
We investigate compactifications of M-theory from $11\to 5\to 4$ dimensions and discuss geometrical properties of 4-d moduli fields related to the structure of 5-d theory. We study supersymmetry breaking by compactification of the fifth dimension and find that an universal superpotential is generated for the axion-dilaton superfield $S$. The resulting theory has a vacuum with $=1$, zero cosmological constant and a gravitino mass depending on the fifth radius as $m_{3/2} \sim R_5^{-2}/M_{Pl}$. We discuss phenomenological aspects of this scenario, mainly the string unification and the decompactification problem.
Dudas Emilian
Grojean Christophe
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