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Moduli dependent spectra of heterotic compactifications

By R. Donagi, Y. He, B. A. Ovrut and R. Reinbacher


Explicit methods are presented for computing the cohomology of stable, holomorphic vector bundles on elliptically fibered Calabi-Yau threefolds. The complete particle spectrum of the low-energy, four-dimensional theory is specified by the dimensions of specific cohomology groups. The spectrum is shown to depend on the choice of vector bundle moduli, jumping up from a generic minimal result to attain many higher values on subspaces of co-dimension one or higher in the moduli space. An explicit example is presented within the context of a heterotic vacuum corresponding to an SU(5) GUT in four-dimensions

Topics: QC
Publisher: 'Elsevier BV'
Year: 2004
DOI identifier: 10.1016/j.physletb.2004.08.010
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Provided by: City Research Online

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