**Introduction to String Theory**

by Gerard 't Hooft

**Publisher**: Utrecht University 2004**Number of pages**: 79

**Description**:

Contents: strings in QCD, the classical string, open and closed strings, quantization, Lorentz invariance, interactions and vertex operators, BRST quantization, the Polyakov path integral, T-Duality, complex coordinates, fermions in strings, the GSO projection, zero modes, etc.

Download or read it online for free here:

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