2007/03/31 by Sameer Murthy · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Brane cosmology #Non-critical string theory #Noncommutative and Quantum Gravity Theories #Quantum Chromodynamics and Particle Interactions #String (physics) #String field theory #String theory #Superstring theory #Supersymmetry #Supersymmetry breaking #Worldsheet #hep-th
paper · pdf · doi:10.1088/1126-6708/2007/08/013
published as JHEP0708:013,2007 · 29 pages, harvmac, 8 figures; v2 typos corrected, reference added
arxiv created 2007/05/30 · openalex publication_date 2007/08/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
We embed the supersymmetry breaking mechanism in N=1 SQCD of hep-th/0602239 in a smooth superstring theory using D-branes in the background R4 × SL(2)k=1/U(1) which smoothly captures the throat region of an intersecting NS5-brane configuration. A controllable deformation of the supersymmetric branes gives rise to the mass deformation of the magnetic SQCD theory on the branes. The consequent instability on the open string worldsheet can be followed onto a stable non-supersymmetric configuration of D-branes which realize the metastable vacuum configuration in the field theory. The new brane configuration is shown to backreact onto the background such as to produce different boundary conditions for the string fields in the radial direction compared to the supersymmetric configuration. In the string theory, this is interpreted to mean that the supersymmetry breaking is explicit rather than spontaneous.