Browsing FAS Scholarly Articles by Keyword "D-branes"

Now showing items 1-7 of 7

    • Black hole deconstruction 

      Denef, Frederik; Gaiotto, Davide; Strominger, Andrew E.; Bleeken, Dieter; Yin, Xi (Springer-Verlag, 2012)
      A D4-D0 black hole can be deconstructed into a bound state of D0 branes with a D6-D6 pair containing worldvolume fluxes. The exact spacetime solution is known and resembles a D0 accretion disk surrounding a D6-D6 core. We ...

    • D-brane Deconstructions in IIB Orientifolds 

      Collinucci, Andres; Denef, Frederik; Esole, Mboyo (Institute of Physics, 2009)
      With model building applications in mind, we collect and develop basic techniques to analyze the landscape of D7-branes in type IIB compact Calabi-Yau orientifolds, in three different pictures: F-theory, the D7 worldvolume ...

    • Exact Solutions for Supersymmetric Stationary Black Hole Composites 

      Bates, Brandon; Denef, Frederik (Springer, 2011)
      Four dimensional N = 2 supergravity has regular, stationary, asymptotically flat BPS solutions with intrinsic angular momentum, describing bound states of separate extremal black holes with mutually nonlocal charges. Though ...

    • Split States, Entropy Enigmas, Holes and Halos 

      Denef, Frederik; Moore, Gregory W. (Springer, 2011)
      We investigate degeneracies of BPS states of D-branes on compact Calabi-Yau manifolds. We develop a factorization formula for BPS indices using attractor flow trees associated to multicentered black hole bound states. This ...

    • Supersymmetric Gauge Theories, Intersecting Branes and Free Fermions 

      Dijkgraaf, Robbert; Hollands, Lotte; Sulkowski, Piotr; Vafa, C. (American Physical Society, 2008)
      We show that various holomorphic quantities in supersymmetric gauge theories can be conveniently computed by configurations of D4-branes and D6-branes. These D-branes intersect along a Riemann surface that is described by ...

    • T-Branes and Monodromy 

      Cecotti, Sergio; Cordova, Clay Alexander; Heckman, Jonathan; Vafa, C. (Springer Verlag, 2011)
      We introduce T-branes, or "triangular branes," which are novel non-abelian bound states of branes characterized by the condition that on some loci, their matrix of normal deformations, or Higgs field, is upper triangular. ...

    • Wall-Crossing from Supersymmetric Galaxies 

      Andriyash, Evgeny; Denef, Frederik; Jafferis, Daniel Louis; Moore, Gregory W. (Springer, 2012)
      We give an elementary physical derivation of the Kontsevich-Soibelman wall crossing formula, valid for any theory with a 4d N = 2 supergravity description. Our argument leads to a slight generalization of the formula, which ...