Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1997-09-11
Lett.Math.Phys. 44 (1998) 105-120
Physics
High Energy Physics
High Energy Physics - Theory
18 pages, LaTeX
Scientific paper
By considering constraints on the dimensions of the Lie algebra corresponding to the weight one states of Z_2 and Z_3 orbifold models arising from imposing the appropriate modular properties on the graded characters of the automorphisms on the underlying conformal field theory, we propose a set of constructions of all but one of the 71 self-dual meromorphic bosonic conformal field theories at central charge 24. In the Z_2 case, this leads to an extension of the neighborhood graph of the even self-dual lattices in 24 dimensions to conformal field theories, and we demonstrate that the graph becomes disconnected.
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