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IPM
30
YEARS OLD

“School of Astronomy”

Paper   IPM / Astronomy / 13674
   School of Astronomy
  Title: dS solutions with co-dimension 2 branes in six dimensions
  Author(s):
1 . H.R. Afshar
2 . H. Firouzjahi
3 . S. Parvizi
  Status: Published
  Journal: Class.Quant.Grav
  Year: 2013
  Supported by: IPM
  Abstract:
We investigate phenomenological four-dimensional (4D) dS solutions with co-dimension 2 branes and finite 4D Planck mass in six dimensions. We present the conditions under which six-dimensional compactifications with holomorphic axion�??dilaton field or models with pure gravity with local sources can yield 4D dS solutions. Different classes of solutions are specified by a holomorphic function describing different embeddings of multiple conical branes. Depending on the local singularities of this holomorphic function and the topology of the compact dimension, one has to introduce 3-branes creating a deficit angle equal to �? and/or 4-branes with positive tensions

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