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New Aspects of Heterotic--F Theory Duality | | Hirotaka Hayashi
; Radu Tatar
; Yukinobu Toda
; Taizan Watari
; Masahito Yamazaki
; | | Date: |
8 May 2008 | | Abstract: | In order to understand both up-type and down-type Yukawa couplings, F-theory
is a better framework than the perturbative Type IIB string theory. The duality
between the Heterotic and F-theory is a powerful tool in gaining more insights
into F-theory description of low-energy chiral multiplets. Because chiral
multiplets from bundles wedge^2 V and wedge^2 V^x as well as those from a
bundle V are all involved in Yukawa couplings in Heterotic compactification, we
need to translate descriptions of all those kinds of matter multiplets into
F-theory language through the duality. We find that chiral matter multiplets in
F-theory are global holomorphic sections of line bundles on what we call
covering matter curves. The covering matter curves are formulated in Heterotic
theory in association with normalization of spectral surface, while they are
where M2-branes wrapped on a vanishing two-cycle propagate in F-theory.
Chirality formulae are given purely in terms of primitive four-form flux. In
order to complete the translation, the dictionary of the Heterotic--F theory
duality has to be refined in some aspects. A precise map of spectral surface
and complex structure moduli is obtained, and with the map, we find that
divisors specifying the line bundles correspond precisely to codimension-3
singularities in F-theory. | | Source: | arXiv, 0805.1057 | | Services: | Forum | Review | PDF | Favorites | |
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