Organizers:

T. D. Cohen (Maryland U.), L. Glozman (Graz U.)

QCD with massless quarks is chirally symmetric. At zero temperature and baryon density this symmetry is spontaneously broken and the quarks and gluons are confined inside hadrons. The connection between confinement, spontaneous breaking of chiral symmetry and hadron mass generation is a fundamental issue. Even though QCD is now more than half a century old, this issue has not been fully elucidated. Exploring this connection is a principal theme of this workshop.

A second theme of the workshop, deeply connected with the first is the behavior of QCD matter at higher temperatures and densities. At low temperature and density the matter is well described as a gas of hadrons while at very high temperatures it is believed to behave like a weakly interacting plasma of quarks and gluons. There are also intriguing results from lattice simulations suggesting the possibility of a qualitatively distinct intermediate regime/phase associated with an approximate emergent symmetry. A key question is how can these various regimes/phases of QCD matter be understood in terms of symmetries and effective degrees of freedom.

The workshop will explore these issues using a variety of tools and approaches.

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