On perturbative field theory and twistor string theory. Twistor theory was originally proposed as a new geometric framework for physics that aims to unify general relativity and quantum mechanics 173, 174, 184, 182, 183. Flip tanedob institute for high energy phenomenology, newman laboratory of elementary particle physics, cornell university, ithaca, ny 14853, usa email. We have also drawn on some ideas from the books string theory and m theory becker, becker and schwarz, introduction to string theory polchinski, string theory in a. For nearly four decades, penrose has been exploring his own mathematical approach twistor theory. These lecture notes mostly follow the lectures, but aim to extend them in two ways.
Furthermore, despite recent advances at one and two loops, their applicability to all loop orders has yet to be demonstrated. Pdf matrix models and dbranes in twistor string theory. We will see further that it is in fact a finite theory of. On perturbative field theory and twistor string theory1 james bedforda,b a centre for research in string theory, department of physics queen mary, university of london mile end road, london e1 4ns, uk b department of physics, cern theory division 1211 geneva 23, switzerland abstract it is wellknown that perturbative calculations in. On perturbative field theory and twistor string theory by james bedford 180 pages available from the qmul website. Geometry and supersymmetry in type ii string theory. Since every consistent quantum theory of strings necessarily contains a massless spin two particle which has the kinematical and dynamical properties of a. Perturbative gauge theory as a string theory in twistor space by edward witten hepth0312171 97 pages conformal supergravity in twistorstring theory by nathan berkovits and edward witten hepth0406051 43 pages.
The path integral localizes on holomorphic maps, while the 0,2 moduli naturally correspond to the. Matrix models and dbranes in twistor string theory. An introduction to string theory kevin wray abstract. These notes are based on lectures given at the 271th wehaereusseminar.
University of cambridge part iii mathematical tripos. Department of applied mathematics and theoretical physics. Lectures on string theory uci physics and astronomy. March 23, 2010 abstract this is a set of latexed notes on string theory from liam mcallisters physics. Open string theories always contain closed strings, and thus string theory is a theory of quantum gravity. Lectures on twistor string theory and perturbative yang. Introduction to string theory institut fur theoretische physik.
It is, at one and the same time, a logic continuation of established theoretical notions dating back over half a century, and a radical new par in fundamental. String theory is one of the most exciting and challenging areas of modern theoretical physics. We reformulate twistor string theory as a heterotic string based on a twisted 0,2 model. Jedes elementarteilchen wird durch einen string beschrieben. As with string theory, the brilliant physicist sir roger penroses twistor theory has provided some mathematical insights into the existing theories of physics, including some that lie at the heart of the standard model of particle physics. Based on lectures given at the radboud universiteit, nijmegen. The second general fact is that yangmills gauge theories of the. At tree level, evaluating the instanton contribution has led to new insights about scattering. The functionf l is related to the cusp anomalous dimension. This set of notes is based on the course introduction to string theory which was taught by prof.
The anomalous dimension of a twist2 operator trzdjzfor largejbehaves like jf. Request pdf on closed twistor string theory the heterotic twistor string theory of mason and skinner is investigated with particular attention given to the role of topological gravity on. The string theory in question is the topological open string bmodel on a calabiyau supermanifold cp 3j4. Kostas skenderis in the spring of 2009 at the university of amsterdam. String theory, also known by names such as superstring theory and sometimes m theory, is an id that has been around for a rather long time, over two decades. Their aim is to give an introduction to string theory. Introduction to string theory 3 tures on string theory were supposed to give a pedagogical introduction and to prepare for later lectures on branes worlds, large extra dimensions, the adscft correspondence and black holes.