On the Equivalence of String Vacua

Details On the Equivalence of String Vacua On the Equivalence of String Vacua

2011-01-25

arxiv.org/abs/1101.4951v1

Physics

High Energy Physics

High Energy Physics - Theory

4 pages. To appear in the proceedings of the Corfu Summer Institute 2010

Scientific paper

The heterotic-string models in the free fermionic formulation are among the most realistic string vacua constructed to date, which motivates their detailed exploration. Classification of free fermionic heterotic-string vacua revealed a duality under exchange of spinor and vector representations of the SO(10) GUT symmetry. The spinor-vector duality was subsequently demonstrated in a Z2 X Z2 X Z2 orbifold, in which the map is realised as exchange of discrete torsions. Analysis of the orbifold partition function shows that the duality map preserves the number of massless twisted states. While the dual vacua are distinct from the point of view of the low energy field theory it is suggested that they are equivalent from the string point of view and may be connected by continuous and discrete transformations.

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