Titlebook: Basic Concepts of String Theory; Ralph Blumenhagen,Dieter Lüst,Stefan Theisen Textbook 2013 Springer-Verlag Berlin Heidelberg 2013 BRST Qu

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Introduction,roblem was the existence of a critical dimension, which is 26 for the bosonic string and 10 for the fermionic string. Another obstacle for the interpretation of string theory as a theory of strong interactions was the existence of a massless spin two particle which is not present in the hadronic world.

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The Classical Bosonic String,We will then solve the classical equations of motion for single free closed and open strings. These solutions will be used for the canonical quantization which we will discuss in detail in the next chapter.

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The Quantized Fermionic String,etry of the ten-dimensional theory. There are two possible space-time supersymmetric GSO projections which result in the type IIA and the type IIB superstring. We also present the covariant path integral quantization. The chapter closes with an appendix on spinors in .dimensions.

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Conformal Field Theory III: Superconformal Field Theory,al field theory parallels that of conformal field theory, and we will treat those rather briefly. Of special interest are . = 2 superconformal field theories, as they are related to space-time supersymmetry. These theories show some new features which we will present in more detail.

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Textbook 2013lications to black hole physics and cosmology, nor strings theory at finite temperatures. .End-of-chapter references have been added to guide the reader wishing to pursue further studies or to start research in well-defined topics covered by this book.

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Ivan Shorubalko,Lex Pillatsch,Ivo Utkee background fluxes modify the string equations of motion at leading order so that its solutions generically generate a potential for the would-be moduli fields. Thus they receive a vacuum expectation value and a mass. Basic knowledge of .supersymmetry in four dimensions is assumed.