Dynamical correlations in low-energy pion double charge exchange: E. R. Siciliano and Mikkel B. Johnson. Los Alamos National Laboratory, Los Alamos, New Mexico 87545; and H. Sarafian. Department of Physics, Pennsylvania State University, York, Pennsylvania 17403

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 70 KB
• Volume: 201
• Category: Article
• ISSN: 0003-4916
• DOI: 10.1016/0003-4916(90)90363-s

✦ Synopsis

It is determined by the genus of the spatial surface, the coefficient of the action k, and a set of vacuum angles, and it corresponds to the space of conformal blocks of a free scalar in two dimensions compactilied on a circle of radius squared k. The expectation of an arbitrary knot is then evaluated by relating the theory in the presence of the knot to a theory in a background gauge field. In this framework, the dependence of the result on the regularization and the framing of the knot becomes explicit. Finally, possible extensions of the methods used in this work to nonabelian theories are discussed.