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Introduction to Strings and Branes by Peter West

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9 Conformal symmetry and string theory

 

 

 

 

If Ed had thought of this, it would have worked

David Farlie

In this chapter we will illustrate the general methods of conformal field theory given in chapter 8. This will include the theory of a free boson and also that of a free fermion. We then explain how such systems occurred when we quantised the bosonic string and superstring in earlier chapters. This allows us to give a general procedure for constructing string theories using conformal field techniques. Finally, using a very special free field which possesses what is known as a background charge we give a method of explicitly constructing all the correlation functions of any of the minimal models.

9.1 Free field theories

We now illustrate ...

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