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Gaugino Condensation in M-theory on S^1/Z_2
Andre Lukas, Burt A. Ovrut, Daniel Waldram
In the low energy limit of for M-theory on S^1/Z_2, we calculate the gaugino condensate potential in four dimensions using the background solutions due to Horava. We show that this…
On the Four-Dimensional Effective Action of Strongly Coupled Heterotic String Theory
Andre Lukas, Burt A. Ovrut, Daniel Waldram
The low-energy D=4, N=1 effective action of the strongly coupled heterotic string is explicitly computed by compactifying Horava-Witten theory on the deformed Calabi-Yau three-fold…
Soliton Solutions of M-theory on an Orbifold
Zygmunt Lalak, Andre' Lukas, Burt A. Ovrut
We explicitly construct soliton solutions in the low energy description of M-theory on S^1/Z_2. It is shown that the 11-dimensional membrane is a BPS solution of this theory if str…
U-duality Covariant M-theory Cosmology
Andre Lukas, Burt A. Ovrut
A manifestly U-duality covariant approach to M-theory cosmology is developed and applied to cosmologies in dimensions D=4,5. Cosmological properties such as expansion powers and Hu…
U-Duality Symmetries from the Membrane Worldvolume
Andre Lukas, Burt A. Ovrut
We study U-duality symmetries of toroidally compactified M theory from the membrane worldvolume point of view. This is done taking the most general set of bosonic background fields…