D-branes at multicritical points

Understand

The moduli space of c=1 conformal field theories in two dimensions has a multicritical point, where a circle theory is equivalent to an orbifold theory.

• We analyse all the conformal branes in both descriptions of this theory, and find convincing evidence that the full brane spectrum coincides.
• This shows that the equivalence of the two descriptions at this multicritical point extends to the boundary sector.
• We also perform the analogous analysis for one of the multicritical points of the N=1 superconformal field theories at c=3/2.