Two-dimensional O(n) models and logarithmic CFTs

Understand

We study O(n)-symmetric two-dimensional conformal field theories (CFTs) for a continuous range of n below two.

• These CFTs describe the fixed point behavior of self-avoiding loops.
• There is a pair of known fixed points connected by an RG flow.
• When n is equal to two, which corresponds to the Kosterlitz-Thouless critical theory, the fixed points collide.