Rene REINBACHER
(Rutgers University)
Moduli dependent spectra of heterotic compactifications
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.
Reference:
- Ron Donagi, Yang-Hui He, Burt A. Ovrut, Rene Reinbacher,
Moduli Dependent Spectra of Heterotic Compactifications,
hep-th/0403291.