edited by Antonino Zichichi (European Physical Society, Switzerland)

In August/September 2000, a group of 80 physicists from 53 laboratories in 15 countries met in Erice, Italy, to participate in the 38th Course of the International School of Subnuclear Physics. This book constitutes the proceedings of that meeting. It focuses on the theoretical investigation of several basic unity issues, including: (1) the understanding of gauge theories in both their continuum and lattice versions; (2) the possible existence and relevance of large extra dimensions together with the resultant lowering of the Planck/string scale to the TeV range; (3) the origin and structure of flavour mixing in the quark and lepton (neutrino) sectors.

• Mini-Courses on Basics:
  • Chiral Gauge Theories Revisited (M Lüscher)
  • Strings, Branes and New Physics (J Polchinski)
  • New Physics from New Dimensions (I Antoniadis)
• Round Table on Status of ε′/ε:
  • About the Measurement of Direct CP Violation at CERN with the NA48 experiment (M Calvetti)
  • Principles Behind the KTeV Approach to Measuring Direct CP Violation (B Winstein)
  • Tests of T-Invariance in Neutral Kaon Decays (P K Kabir)
• Experimental Highlights:
  • Experimental Highlights from LEP (U Becker)
  • Experimental Highlights from the HERA Collider (G Wolf)
  • CP Violation and Other Cosmological Issues (B Winstein)
• Special Sessions for New Talents:
  • Searching for Massive Exotic Particles in the NuTeV Neutrino Detector (J A Formaggio)
  • Ultradense Quark Stars from Perturbative QCD (E S Fraga)
  • The Charged-Mode Systematic Error for the KTeV Experiment (J Graham)
  • and other papers