2018/06/30 by Riccardo Argurio, Matteo Bertolini, Francesco Bigazzi +2
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Domain (mathematical analysis) #Domain wall (magnetism) #Holography #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum chromodynamics #Quantum mechanics #String (physics) #String theory #Theoretical physics #hep-th
paper · pdf · doi:10.1007/jhep09(2018)090
25 pages, 2 figures. v2: refs added, typos corrected, some clarifications in section 3. v3: minor improvements, ref added
openalex publication_date 2018/09/01 · arxiv created 2018/09/13 · arxiv updated 2018/10/17 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/05
A bstract Massive QCD at θ = π breaks CP spontaneously and admits domain walls whose dynamics and phases depend on the number of flavors and their masses. We discuss these issues within the Witten-Sakai-Sugimoto model of holographic QCD. Besides showing that this model reproduces all QCD expectations, we address two interesting claims in the literature. The first is about the possibility that the QCD domain-wall theory is fully captured by three-dimensional physics, only. The second regards the existence of quantum phases in certain Chern-Simons theories coupled to fundamental matter. Both claims are supported by the string theory construction.