Speaker
Gabriele Honecker
(Johannes Gutenberg University Mainz)
Description
As recently observed, discrete Abelian symmetries can remain as remnants in the low-energy effective action of string compactifications with massive U(1) symmetries. As I will discuss in this talk, the Peccei-Quinn symmetry arises naturally in this way in D-brane models with the QCD axion as an open string excitation and several other (invisible) axions from both the open and closed string sectors.
Author
Gabriele Honecker
(Johannes Gutenberg University Mainz)
