منابع مشابه
Topological Gauge Theory and Twistors
By use of harmonic superfields, Witten’s topological gauge theory is written as a field theory on a supertwistor space. Further, using the realisation of complex compactified Minkowski space as a quadric in CP , we show that the theory has a simple formulation in terms of analytic superfields on super-CP 5 ×CP . This research was supported in part by the U.S. Department of Energy
متن کاملTwistors, strings and supersymmetric gauge theories
This thesis is concerned with the study of scattering amplitudes in four-dimensional conformal field theories, more particularly the N = 4 super-Yang-Mills theory. We study this theory first at tree level by using twistor space techniques and review the twistor string models that were proposed to describe it. Then, we turn to the issue of iteration relations and all loop ansatze for scattering ...
متن کاملGauge theory of topological phases of matter
We study the response of quantum many-body systems to coupling some of their degrees of freedom to external gauge fields. This serves to understand the current Green functions and transport properties of interacting many-body systems. Our analysis leads to a “gauge theory of states of matter” complementary to the well-known Landau theory of order parameters. We illustrate the power of our appro...
متن کاملTopological susceptibility in SU(3) gauge theory.
We compute the topological susceptibility for the SU(3) Yang-Mills theory by employing the expression of the topological charge density operator suggested by Neuberger's fermions. In the continuum limit we find r(4)(0)chi = 0.059(3), which corresponds to chi = (191 +/- 5 MeV)(4) if F(K) is used to set the scale. Our result supports the Witten-Veneziano explanation for the large mass of the eta(').
متن کاملTopological resolution of gauge theory singularities
Some gauge theories with Coulomb branches exhibit singularities in perturbation theory, which are usually resolved by nonperturbative physics. In string theory this corresponds to the resolution of timelike singularities near the core of orientifold planes by effects from F or M theory. We propose a new mechanism for resolving Coulomb branch singularities in three dimensional gauge theories, ba...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1989
ISSN: 0370-2693
DOI: 10.1016/0370-2693(89)91320-8