منابع مشابه
Heterotic Orbifolds
A review of orbifold geometry is given, followed by a review of the construction of fourdimensional heterotic string models by compactification on a six-dimensional Z3 orbifold. Particular attention is given to the details of the transition from a classical theory to a first-quantized theory. Subsequently, a discussion is given of the systematic enumeration of all standard-like three generation...
متن کاملHeterotic non–Abelian orbifolds
We perform the first systematic analysis of particle spectra obtained from heterotic string compactifications on non–Abelian toroidal orbifolds. After developing a new technique to compute the particle spectrum in the case of standard embedding based on higher dimensional supersymmetry, we compute the Hodge numbers for all recently classified 331 non–Abelian orbifold geometries which yield N = ...
متن کاملLocalized anomalies in heterotic orbifolds
Recently spatially localized anomalies have been considered in higher dimensional field theories. The question of the quantum consistency and stability of these theories needs further discussion. Here we would like to investigate what string theory might teach us about theories with localized anomalies. We consider the Z3 orbifold of the heterotic E8×E8 theory, and compute the anomaly of the ga...
متن کاملTarget-space anomalies and elliptic indices in heterotic orbifolds
We present a complete string theory analysis of all mixed gauge, gravitational and target-space anomalies potentially arising in the simplest heterotic ZN orbifold models, with N odd and standard embedding. These anomalies turn out to be encoded in an elliptic index, which can be easily computed; they are found to cancel through a universal GS mechanism induced by the dilaton multiplet. The tar...
متن کاملA Mini–Landscape of Exact MSSM Spectra in Heterotic Orbifolds
We explore a “fertile patch” of the heterotic landscape based on a Z6-II orbifold with SO(10) and E6 local GUT structures. We search for models allowing for the exact MSSM spectrum. Our result is that of order 100 out of a total 3 × 10 inequivalent models satisfy this requirement.
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2008
ISSN: 1029-8479
DOI: 10.1088/1126-6708/2008/04/060