Non-supersymmetric D-brane configurations with Bose-Fermi degenerate open string spectrum | Zendy

Matthias R. Gaberdiel | Zendy; Ashoke Sen | Zendy

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Non-supersymmetric D-brane configurations with Bose-Fermi degenerate open string spectrum

Author(s) -

Matthias R. Gaberdiel,

Ashoke Sen

Publication year - 1999

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/1999/11/008

Subject(s) - physics , degenerate energy levels , brane , orbifold , string (physics) , moduli space , spectrum (functional analysis) , d brane , degeneracy (biology) , string theory , fermi gamma ray space telescope , space (punctuation) , theoretical physics , mathematical physics , quantum mechanics , geometry , mathematics , bioinformatics , biology , linguistics , philosophy

The spectrum of open strings on various non-BPS D-brane configurations intype II string theory on a K3 orbifold is analysed. At a generic point in thecorresponding moduli space the spectrum of open strings does not have anydegeneracy between bosonic and fermionic states. However, there exist specialvalues for these moduli for which many non-BPS D-brane configurations have anexactly bose-fermi degenerate open string spectrum at all mass levels. In thiscase the closed string exchange interaction between a pair of such D-braneconfigurations vanishes at all distances.Comment: 28 pages, LaTe

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