**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:

**Download link**

(450KB, PDF)

## Similar books

**String Theory: a perspective over the last 25 years**

by

**Sunil Mukhi**-

**arXiv**

This text provides some historical background and then reviews developments in string theory over the last twenty-five years. Both perturbative and non-perturbative approaches are surveyed and their impact on how we view quantum gravity is analysed.

(

**9927**views)

**What is String Theory?**

by

**Joseph Polchinski**-

**arXiv**

This is an introduction to conformal field theory and string perturbation theory. The authors search for a deeper answer to the question posed in the title. Contents: Conformal Field Theory; String Theory; Vacua and Dualities; and more.

(

**10927**views)

**An Introduction to Non-perturbative String Theory**

by

**Ashoke Sen**-

**arXiv**

Basic aspects of non-perturbative string theory are discussed. The topics include test of duality symmetries based on the analysis of the low energy action and the spectrum of BPS states, relationship between different duality symmetries, etc.

(

**8055**views)

**An Introduction to Black Holes, Information and the String Theory Revolution**

by

**Leonard Susskind, James Lindesay**-

**OECD Publishing**

Leonard Susskind, one of the co-inventors of the Holographic Principle as well as one of the founders of String theory, develops and explains these concepts. This well-planned, stimulating and provocative book can be enthusiastically recommended.

(

**11922**views)