2014/11/14 by Renata Kallosh, Timm Wrase · 7 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #De Sitter universe #Multiplet #Nilpotent #Orientifold #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #String theory #Supergravity #Supermultiplet #Supersymmetry #Supersymmetry breaking #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1007/jhep12(2014)117
published as JHEP 1412:117, 2014 · 17 pages; v2: added clarifying comments and a reference
arxiv created 2014/11/14 · openalex publication_date 2014/12/01 · arxiv updated 2014/12/22 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The KKLT construction of de Sitter vacua includes an uplifting term coming from an anti-D3-brane. Here we show how this term can arise via spontaneous breaking of supersymmetry, based on the emergence of a nilpotent chiral supermultiplet on the world-volume of the anti-D3-brane. We establish and use the fact that both the DBI as well as the WZ term, with account of orientifolding, acquire a form of the Volkov-Akulov action. For an O3 orientifold involution of ℝ9,1 we demonstrate the cancellation between the fermionic parts of the DBI and WZ term for the D3-brane action. For the anti-D3-brane we show that the DBI action and the WZ action combine and lead to the emergence of the goldstino multiplet which is responsible for spontaneous breaking of supersymmetry. This provides a string theoretic explanation for the supersymmetric uplifting term in the KKLT effective supergravity model supplemented by a nilpotent chiral multiplet.