NAHE-based string models with SU(4)×SU(2)×U(1) SO(10) subgroup
نویسندگان
چکیده
منابع مشابه
Partition functions of NAHE–based free fermionic string models
The heterotic string free fermionic formulation produced a large class of three generation models, with an underlying SO(10) GUT symmetry which is broken directly at the string level by Wilson lines. A common subset of boundary condition basis vectors in these models is the NAHE set, which corresponds to Z2 ×Z2 orbifold of an SO(12) Narain lattice, with (h1,1, h2,1) = (27, 3). Alternatively, a ...
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The NAHE–set, that underlies the realistic free fermionic models, corresponds to Z2 × Z2 orbifold at an enhanced symmetry point, with (h11, h21) = (27, 3). Alternatively, a manifold with the same data is obtained by starting with a Z2 × Z2 orbifold at a generic point on the lattice and adding a freely acting Z2 involution. In this paper we study type I orientifolds on the manifolds that underly...
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 2003
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2003.09.012