2020/07/31 by Carlo Angelantonj, Quentin Bonnefoy, Cezar Condeescu +1 · 26 citations
Mathematics · Physics and Astronomy · #Algebraic structures and combinatorial models #Black Holes and Theoretical Physics #Heterotic string theory #Noncommutative and Quantum Gravity Theories #Orientifold #String (physics) #String theory #Supergravity #Supersymmetry #Supersymmetry breaking #Tachyon #hep-th
paper · pdf · doi:10.1007/jhep11(2020)125
published in Journal of High Energy Physics 2020(11) (Springer Nature) · 49 pages. Minor corrections/improvements, one reference added in v2
openalex created_date 2020/07/29 · arxiv created 2020/10/18 · openalex publication_date 2020/11/01 · arxiv updated 2020/12/30 · openalex updated_date 2026/08/06
A bstract Recently, Kim, Shiu and Vafa proposed general consistency conditions for six dimensional supergravity theories with minimal supersymmetry coming from couplings to strings. We test them in explicit perturbative orientifold models in order to unravel the microscopic origin of these constraints. Based on the perturbative data, we conjecture the existence of null charges Q ∙ Q = 0 for any six-dimensional theory with at least one tensor multiplet, coupling to string defects of charge Q . We then include the new constraint to exclude some six-dimensional supersymmetric anomaly-free examples that have currently no string or F-theory realization. We also investigate the constraints from the couplings to string defects in case where supersymmetry is broken in tachyon free vacua, containing non-BPS configurations of brane supersymmetry breaking type, where the breaking is localized on antibranes. In this case, some conditions have naturally to be changed or relaxed whenever the string defects experience supersymmetry breaking, whereas the constraints are still valid if they are geometrically separated from the supersymmetry breaking source.