2017/03/31 by Lars Aalsma, Jan Pieter van der Schaar, Bert Vercnocke · 2 citations
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Brane #Brane cosmology #Cosmology and Gravitation Theories #De Sitter universe #Decoupling (probability) #F-term #Galaxies: Formation, Evolution, Phenomena #Mathematics #Metastability #Nilpotent #Particle physics #Physics #Quantum mechanics #Superspace #Supersymmetry #Supersymmetry breaking #Theoretical physics #Universe #hep-th
paper · pdf · doi:10.1007/jhep05(2017)089
22 pages, 1 figure. v2: fixed typos, matches published version
openalex publication_date 2017/05/01 · arxiv created 2017/06/08 · arxiv updated 2017/06/12 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/05
We study the effect of brane polarization on the supersymmetry transformations of probe anti-D3-branes at the tip of a Klebanov-Strassler throat geometry. As is well known, the probe branes can polarize into NS5-branes and decay to a supersymmetric state by brane-flux annihilation. The effective potential has a metastable minimum as long as the number of anti-D3-branes is small compared to the number of flux quanta. We study the reduced four-dimensional effective NS5-brane theory and show that in the metastable minimum supersymmetry is non-linearly realized to leading order, as expected for spontaneously broken supersymmetry. However, a strict decoupling limit of the higher order corrections in terms of a standard nilpotent superfield does not seem to exist. We comment on the possible implications of these results for more general low-energy effective descriptions of inflation or de Sitter vacua.