Nuclear & Particle Physics Seminar
“String Description of QCD: The Θ Vacua” by Mr. Manuel Martinez Martinez, Department of Physics & Astronomy, The University of Iowa
Abstract: String theory began in the 1960’s, in an attempt to describe the large amounts of hadrons that were being discovered at the time. Although it had certain success, it also had some important issues, like unphysical modes, for example. This led many researchers to abandon this approach and embrace Quantum Chromodynamics (QCD), which has been continuously validated since the 1970's by extensive amounts of experimental data, and is now regarded as the theory of the strong interactions. But, ever since the correspondence between string theories and the large N limit of field theories was discovered, there has been several efforts to develop a thorough string description of QCD. We will consider the question of how the effects of Θ vacua can be represented using a string description.