Speaker
Robert Pisarski
(brookhaven national laboratory)
Description
Usually an effective model can be used at low energy, as long as it incorporates the relevant global symmetries, and the appropriate spectrum. Recently, however, it has been understood that the anomaly structure at large distance has to match that at short distances, known as the 't Hooft anomaly. I outline how for two flavors, a standard linear sigma model satisfies the 't Hooft anomaly, while that for three flavors does not.
Primary author
Robert Pisarski
(brookhaven national laboratory)
