# S-transformations for CFT$_2$ as linear mappings from closed to open sector linear spaces

@inproceedings{Liu2022StransformationsFC, title={S-transformations for CFT\$\_2\$ as linear mappings from closed to open sector linear spaces}, author={Xun Liu}, year={2022} }

We make the ﬁrst attempt to deﬁne S-transformations for CFT 2 as linear mappings from closed to open sector linear spaces. The deﬁnition is based on closed-open sector linear space isomorphisms and boundary condition completeness. Diagonal RCFTs can be applied to our deﬁnition straight-forwardly, while more classes of CFT 2 are expected to be applicable. An unconventional open sector sewing, not among open sector sewing introduced by Lewellen, rises naturally and generalizes the deﬁnition. Our…

## References

SHOWING 1-3 OF 3 REFERENCES

### An introduction to the bosonic string

- Physics
- 1998

Foreword Preface Notation 1. A first look at strings 2. Conformal field theory 3. The Polyakov path integral 4. The string spectrum 5. The string S-matrix 6. Tree-level amplitudes 7. One-loop…

### Boundary Conformal Field Theory and the Worldsheet Approach to D-Branes

- Mathematics
- 2014

Introduction 1. Free field theory with boundaries 2. Superstrings and branes 3. Conformal field theory on the plane 4. Boundary conformal field theory 5. Perturbation of boundary conformal field…

### String Field Theory: A Modern Introduction

- Lect. Notes Phys
- 2021