M theory on eight manifolds

  title={M theory on eight manifolds},
  author={Katrin Becker and Melanie Becker},
  journal={Nuclear Physics},
Abstract We show that in certain compactifications of M-theory on eight-manifolds to three-dimensional Minkowski space-time the four-form field strength can have a non-vanishing expectation value, while an N = 2 supersymmetry is preserved. For these compactifications a warp factor for the metric has to be taken into account. This warp factor is non-trivial in three space-time dimensions due to Chern-Simons corrections to the fivebrane Bianchi identity. While the original metric on the internal… 
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Three-dimensional supergravity and the cosmological constant.
  • Becker, Strominger
  • Physics, Medicine
    Physical review. D, Particles and fields
  • 1995
Witten has argued that in 2+1 dimensions local supersymmetry can ensure the vanishing of the cosmological constant without requiring the equality of Bose and Fermi masses. We find that this mechanism
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