منابع مشابه
Standard Model Vacua in Heterotic M – Theory
We present a class of N = 1 supersymmetric “standard” models of particle physics, derived directly from heterotic M–theory, that contain three families of chiral quarks and leptons coupled to the gauge group SU(3)C ×SU(2)L×U(1)Y . These models are a fundamental form of “brane world” theories, with an observable and hidden sector each confined, after compactification on a Calabi–Yau threefold, t...
متن کاملNon–Standard Embedding and Five–Branes in Heterotic M–Theory
We construct vacua of M–theory on S1/Z2 associated with Calabi–Yau three-folds. These vacua are appropriate for compactification to N = 1 supersymmetry theories in both four and five dimensions. We allow for general E8 × E8 gauge bundles and for the presence of five-branes. The five-branes span the four-dimensional uncompactified space and are wrapped on holomorphic curves in the Calabi–Yau spa...
متن کاملDe Sitter Vacua from Heterotic M-Theory
It is shown how metastable de Sitter vacua can arise from heterotic M-theory. The balancing of two inherent non-perturbative effects, open membrane instantons and gaugino condensation on the hidden boundary, which act with opposing forces on the interval length, lead in particular to a stabilization of this modulus. Supersymmetry is broken spontaneously in the resulting vacua. For rather small ...
متن کاملLectures on Heterotic M-Theory
We present three lectures on heterotic M -theory and a fourth lecture extending this theory to more general orbifolds. In Lecture 1, Hořava-Witten theory is briefly discussed. We then compactify this theory on Calabi-Yau threefolds, choosing the “standard” embedding of the spin connection in the gauge connection. We derive, in detail, both the five-dimensional effective action and the associate...
متن کاملDerivative F-Terms from Heterotic M-Theory Five-brane Instantons
We study non-perturbative effects due to a heterotic M-theory five-brane wrapped on Calabi-Yau threefold. We show that such instantons contribute to derivative Fterms described recently by Beasley and Witten rather than to the superpotential.
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ژورنال
عنوان ژورنال: Advances in Theoretical and Mathematical Physics
سال: 2001
ISSN: 1095-0761,1095-0753
DOI: 10.4310/atmp.2001.v5.n1.a4