Non-simply laced Lie algebras via F theory strings

作者：Bonora L^*; Savelli R

来源：The Journal of High Energy Physics, 2010, 2010(11): 025.

DOI：10.1007/JHEP11(2010)025

• p-branes
• F-Theory

In order to describe the appearance in F theory of the non-simply-laced Lie algebras, we use the representation of symmetry enhancements by means of string junctions. After an introduction to the techniques used to describe symmetry enhancement, that is algebraic geometry, BPS states analysis and string junctions, we concentrate on the latter. We give an explicit description of the folding of D-2n to B-n, of the folding of E-6 to F-4 and that of D-4 to G(2) in terms of junctions and Jordan strings. We also discuss the case of C-n, but we are unable in this case to provide a string interpretation.

• 出版日期2010-11