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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Conformal Field Theory III: Superconformal Field Theory, remnant of the reparametrization invariance of the bosonic string in conformal gauge, superconformal invariance is a remnant of local supersymmetry of the fermionic string in super-conformal gauge. This leads us to consider superconformal field theory. In many aspects our discussion of superconform

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String Compactifications,ground at large radius. For this purpose one analyzes the string equations of motion at leading order in a typical length scale .. We describe this approach in detail for a class of backgrounds which preserve some amount of space-time supersymmetry in four-dimensions: compactification on Calabi-Yau

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CFTs for Type II and Heterotic String Vacua, with some general comments about strings moving in compactified spaces and then continue our investigation from Sect. 10.5 on strings in orbifold spaces. We then generalize the construction of non-oriented string theories to compact dimensions and discuss the prototype example of an orientifold on

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String Dualities and M-Theory,via a web of perturbative and non-perturbative dualities. We will discuss the concept of dualities and the role of BPS states in establishing non-perturbative dualities. We construct brane solutions of supergravity, discuss their BPS properties and identify those carrying R-R charge as D-branes. We

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Forced Convection Normal Helium,dditional sixteen dimensions are compactified on the weight-lattice of .or .. We then study D-branes on toroidal spaces and how they transform under T-duality. We introduce intersecting D-branes, their T-dual images and simple orientifolds on such toroidal spaces.

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