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arXiv · hep-th/0101042

Our World as an Intersection of Walls and a String

Norisuke Sakai·Shigemitsu Tomizawa
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Abstract

A solution of Einstein equations is obtained for our four-dimensional world as an intersection of a wall and a string-like defect in seven-dimensional spacetime with a negative cosmological constant. A matter energy-momentum tensor localized on the wall and on the string is needed. A single massless graviton is found and is localized around the intersection. The leading correction to the gravitational Newton potential from massive spin 2 graviton is found to be almost identical to that of a wall in five dimensions, contrary to the case of a string in six dimensions. The generalization to the intersection of a string and $n$ orthogonally intersecting walls is also obtained and a similar result is found for the gravitational potential.

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Norisuke Sakai, Shigemitsu Tomizawa. 2001-02-27. Our World as an Intersection of Walls and a String. https://doi.org/10.1016/s0550-3213(01)00145-6

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