Browsing by Subject "DS vacua in string theory"

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Browsing by Subject "DS vacua in string theory"

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  • (Anti-)brane backreaction beyond perturbation theory 
    Bläbäck, Johan; Danielsson, Ulf H.; Junghans, Daniel; Van Riet, Thomas; Wrase, Timm; Zagermann, Marco (Heidelberg : Springer Verlag, 2012)
    We improve on the understanding of the backreaction of anti-D6-branes in a ux background that is mutually BPS with D6-branes. This setup is analogous to the study of the backreaction of anti-D3-branes inserted in the KS ...
  • Moduli stabilization and cosmology of type IIB on SU(2)-structure orientifolds 
    Caviezel, Claudio; Wrase, Timm; Zagermann, Marco (Heidelberg : Springer Verlag, 2010)
    We consider type IIB flux compactifications on six-dimensional SU(2)-structure manifolds with O5- and O7-planes. These six-dimensional spaces allow not only for F 3 and H3 fluxes but also for F 1 and F 5 fluxes. We derive ...
  • On cosmological constants from α′-corrections 
    Gautason, Fridrik Freyr; Junghans, Daniel; Zagermann, Marco (Heidelberg : Springer Verlag, 2012)
    We examine to what extent perturbative α′-corrections can generate a small cosmological constant in warped string compactifications. Focusing on the heterotic string at lowest order in the string loop expansion, we show ...
  • Persistent anti-brane singularities 
    Bena, Iosif; Junghans, Daniel; Kuperstein, Stanislav; Van Riet, Thomas; Wrase, Timm; Zagermann, Marco (Heidelberg : Springer Verlag, 2012)
    Anti-D-branes inserted in warped throat geometries (supported by fluxes that carry D-brane charges) develop unphysical singularities.It has been argued that these singularities could be resolved when one goes beyond the ...