2 research outputs found
Z_2 x Z_2 Heterotic Orbifold Models of Non Factorisable Six Dimensional Toroidal Manifolds
We discuss heterotic strings on Z_2 x Z_2 orbifolds of non factorisable
six-tori. Although the number of fixed tori is reduced as compared to the
factorisable case, Wilson lines are still needed for the construction of three
generation models. An essential new feature is the straightforward appearance
of three generation models with one generation per twisted sector. We
illustrate our general arguments for the occurrence of that property by an
explicit example. Our findings give further support for the conjecture that
four dimensional heterotic strings formulated at the free fermionic point are
related to Z_2 x Z_2 orbifolds.Comment: 33 pages, LaTeX; discussion of modular invariance added in section
four; added references; to be published in JHE
The Orbifolder: A Tool to study the Low Energy Effective Theory of Heterotic Orbifolds
The orbifolder is a program developed in C++ that computes and analyzes the
low-energy effective theory of heterotic orbifold compactifications. The
program includes routines to compute the massless spectrum, to identify the
allowed couplings in the superpotential, to automatically generate large sets
of orbifold models, to identify phenomenologically interesting models (e.g.
MSSM-like models) and to analyze their vacuum-configurations.Comment: 29 pages, web page http://projects.hepforge.org/orbifolder