Constraints on heterotic M-theory from s-cobordism

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Abstract

We interpret heterotic M-theory in terms of h-cobordism, that is the eleven-manifold is a product of the ten-manifold times an interval is translated into a statement that the former is a cobordism of the latter which is a homotopy equivalence. In the non-simply connected case, which is important for model building, the interpretation is then in terms of s-cobordism, so that the cobordism is a simple-homotopy equivalence. This gives constraints on the possible cobordisms depending on the fundamental groups and hence provides a characterization of possible compactification manifolds using the Whitehead group - a quotient of algebraic K-theory of the integral group ring of the fundamental group - and a distinguished element, the Whitehead torsion. We also consider the effect on the dynamics via diffeomorphisms and general dimensional reduction, and comment on the effect on F-theory compactifications.

Original languageEnglish (US)
Pages (from-to)739-759
Number of pages21
JournalNuclear Physics B
Volume853
Issue number3
DOIs
StatePublished - Dec 21 2011

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equivalence
quotients
torsion
intervals
rings
products

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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Constraints on heterotic M-theory from s-cobordism. / Sati, Hisham.

In: Nuclear Physics B, Vol. 853, No. 3, 21.12.2011, p. 739-759.

Research output: Contribution to journalArticle

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