Click here for a printable version of this page.
Friday, April 20, 2001
Physics Building, Room 204
Note special time.
[Host: Joseph Poon]
University of Virginia
"How QCD Works"
Mathematically, the interaction between quarks and gluons is
remarkably similar to the electromagnetic interaction of electrons
and photons. But unlike QED, QCD has an essentially nonperturbative
structure, as exhibited most strikingly by the absolute confinement
of quarks, which represents a fundamental property of the QCD vacuum
(complete screening of color charge). Another property of QCD, chiral
symmetry breaking, is also a statement about the vacuum, i.e. that it is
full of quark-antiquark pairs (analogous to Cooper pairs in BCS theory).
Chiral symmetry breaking and quark confinement are probably related
phenomena, but the connection is poorly understood. I will discuss
recent lattice calculations which have begun to expose the structure
of the QCD vacuum.
To add a speaker, send an email to
Please include the seminar type (e.g. Colloquia), date, name of the speaker, title of talk, and an abstract (if available).