Non-BPS non-Abelian strings
Mikhail A Shifman, Alexei Yung · Cambridge University Press eBooks · 2023
Non-BPS non-Abelian stringsIn this chapter we will review non-BPS non-Abelian strings.In particular, they appear in non-supersymmetric theories.We will see that, although for BPS strings in supersymmetric theories the transition from quasiclassical to quantum regimes in the world sheet theory on the string goes smoothly (see Section 4.4.4), for the non-Abelian strings in non-supersymmetric theories these two regimes are separated by a phase transition.Next, we will show that the same behavior is typical for non-BPS strings in supersymmetric gauge theories.As an example we consider non-Abelian strings in the so-called N = 1 * theory which is a deformed N = 4 supersymmetric theory with supersymmetry broken down to N = 1 in a special way.