Delta-function Interactions for the Bosonic and Spinning Strings and the Generation of Abelian Gauge Theory

Understand

We construct contact interactions for bosonic and spinning strings.

• In the tensionless limit of the spinning string this reproduces the super-Wilson loop that couples spinor matter to Abelian gauge theory.
• Adding boundary terms that quantise the motion of charges results in a string model equivalent to spinor QED.
• The strings represent lines of electric flux connected to the charges.