# Boundary renormalization group flows in coset conformal field theories

@article{Fredenhagen2003BoundaryRG, title={Boundary renormalization group flows in coset conformal field theories}, author={Stefan Fredenhagen and Volker Schomerus}, journal={Physical Review D}, year={2003}, volume={67}, pages={085001} }

We propose a new rule for boundary renormalization group flows in fixed-point free coset models. Our proposal generalizes the ``absorption of boundary spin'' principle formulated by Affleck and Ludwig to a large class of perturbations in boundary conformal field theories. We illustrate the rule in the case of unitary minimal models.

## 24 Citations

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Using the properties of defect lines, we study boundary renormalisation group flows. We find that when there exists a flow between maximally symmetric boundary conditions a and b then there also…

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We investigate the fusion of B-type interfaces in two-dimensional supersymmetric Landau-Ginzburg models. In particular, we propose to describe the fusion of an interface in terms of a fusion functor…

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### D-branes and matrix factorisations in supersymmetric coset models

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- 2010

Matrix factorisations describe B-type boundary conditions in $ \mathcal{N} = 2 $ supersymmetric Landau-Ginzburg models. At the infrared fixed point, they correspond to superconformal boundary states.…

### Defect loops in gauged Wess-Zumino-Witten models

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- 2010

We consider loop observables in gauged Wess-Zumino-Witten models, and study the action of renormalization group flows on them. In the WZW model based on a compact Lie group G, we analyze at the…

### Bulk flows in Virasoro minimal models with boundaries

- Environmental Science
- 2009

The behaviour of boundary conditions under relevant bulk perturbations is studied for the Virasoro minimal models. In particular, we consider the bulk deformation by the least relevant bulk field…

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