Two-dimensional QCD and instanton contribution
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In these notes Yang-Mills theories in 1+1 dimensions are reviewed. Instantons on a sphere prove to be -in the decompactification limit- the key issue to clarify an old controversy between equal-time and light-front quantization.
11 pages, Revtex, amssymb. Talk given by F. Vian at the XVII Autumn School "QCD: Perturbative or Nonperturbative?", Lisbon (Portugal), September 29 - October 4, 1999. To appear in the proceedings
11 pages, Revtex, amssymb. Talk given by F. Vian at the XVII Autumn School "QCD: Perturbative or Nonperturbative?", Lisbon (Portugal), September 29 - October 4, 1999. To appear in the proceedings