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Univerzitetna knjižnica Maribor (UKM)
Knjižnica je med tednom odprta od 8. do 14. ure, ob sredah do 17. ure ter ob sobotah od 9. do 13. ure. Čitalnica ČUK je odprta od ponedeljka do sobote od 12. do 24. ure, ob nedeljah je zaprta. Informacije: 02 25 07 431, ukm@um.si
  • (Non-)BPS bound states and D-brane instantons
    Cvetič, Mirjam ; Richter, R. ; Weignad, Timo
    We study non-perturbative effects in four-dimensional N = 1 supersymmetric orientifold compactifications due to D-brane instantons which are not invariant under the orientifold projection. We show ... that they can yield superpotential contributions via a multi-instanton process at threshold. Some constituents of this configuration form bound states away from the wall of marginal stability which can decay in other regions of moduli space. A microscopic analysis reveals how contributions to the superpotential are possible when new BPS states compensate for their decay. We study this concretely for D2-brane instantons along decaying special Lagrangians in Type IIA and for D5-branes instantons carrying holomorphic bundles in Type I theory.
    Vir: The Journal of high energy physics. - ISSN 1126-6708 (Issue 7, 2008, art. no 12)
    Vrsta gradiva - članek, sestavni del
    Leto - 2008
    Jezik - angleški
    COBISS.SI-ID - 65782529

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