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| Mass in QCD: Symmetries of a Quantum Field Theory |
| 2006-12-13
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Speaker : Prof. R. Sekhar Chivukula Department of Physics and Astronomy,Michigan State University
Date : 2006-12-13 15:30
Venue :
Conference Hall 322, ITP/理论物理所322报告厅
Abstract : The symmetries of a quantum field theory can be realized in a variety of ways. Symmetries can be realized explicitly, approximately, through spontaneous symmetry breaking or, via#@ an anomaly, quantum effects can dynamically eliminate a symmetry of the theory that was present at the classical level. Different symmetries in Quantum Chromodynamics (QCD), the modern theory of the strong interactions, exemplify each of these possibilities. The interplay of these effects determine the spectrum of particles that we observe and, ultimately, account for 99% of the mass of ordinary matter.
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