Transcription of An Introduction to String Theory - UCB Mathematics
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An Introduction to String Theory - UCB Mathematics
Preprint typeset in JHEP style - PAPER VERSIONR evised May 6, 2011An Introduction to String TheoryKevin WrayAbstract:This set of notes is based on the course Introduction to String Theory which was taught by Prof. Kostas Skenderis in the spring of 2009 at the Universityof Amsterdam. We have also drawn on some ideas from the booksString Theory andM- Theory (Becker, Becker and Schwarz), Introduction to String Theory (Polchinski), String Theory in a Nutshell(McMahon) andSuperstring Theory (Green, Schwarz andWitten), along with the lecture notes of David Tong, sometimes Motivation for String What is String Types of String Outline of the Manuscript92. The Bosonic String Classical Action for Point Classical Action for Relativistic Point Reparametrization Invariance of Canonical Varying S0in an Arbitrary Background (Geodesic Equation) Generalization to The String Exercises243.
order the Planck mass we need more and more parameters to absorb the infinities that occur in the theory. In fact we need an infinite number of parameters to renormalize the theory at these scales. Remember that for each parameter that gets renormalized we must make a measurement! So GR is a pretty useless theory at these energies.
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