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QCD phases at high density and instantons

✍ Scribed by E. Shuryak

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
964 KB
Volume
642
Category
Article
ISSN
0375-9474

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✦ Synopsis

The talk is an introduction into diquark condensation phenomena which occur in QCD at high energy density.

They are driven by instantons and instanton-antiinstanton pairs (or "molecules"), which generate attraction in some qq channels. A number of phases is possible, with or without restoration of chiral symmetry: the work is not finished and we do not yet know which take place in real &CD. We also emphasize that specific diquark correlations play a significant role in baryon structure, in particular making that of a nucleon very different of a a (or other member of a decuplet).

This "small N," scenario based on comparison to QCD with two colors is contrasted with the "large N," one.

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