The RR charges of A-type Gepner models

Details The RR charges of A-type Gepner models The RR charges of A-type Gepner models

2005-11-07

arxiv.org/abs/hep-th/0511078v2

JHEP 0601:111,2006

Physics

High Energy Physics

High Energy Physics - Theory

25 pages, comparison to results using path integrals added, minor changes in section 2, reference added

Scientific paper

10.1088/1126-6708/2006/01/111

It is shown that the RR charges of Gepner models are not all accounted for by the usual tensor product and permutation branes. In order to characterise the missing D-branes we study the matrix factorisation approach to the description of D-branes for Gepner models. For each of the A-type models we identify a set of matrix factorisations whose charges generate the full lattice of quantised charges. The additional factorisations that are required correspond to generalised permutation branes.

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