The String theory approach to generalized 2-D Yang-Mills theory

Jul, 1994
52 pages
Published in:
  • Nucl.Phys.B 434 (1995) 139-178
e-Print:
Report number:
  • TAUP-2182-94

Citations per year

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Abstract:
We calculate the partition function of the SU(N)SU(N) ( and U(N)U(N)) generalized YM2YM_2 theory defined on an arbitrary Riemann surface. The result which is expressed as a sum over irreducible representations generalizes the Rusakov formula for ordinary YM_2 theory. A diagrammatic expansion of the formula enables us to derive a Gross-Taylor like stringy description of the model. A sum of 2D string maps is shown to reproduce the gauge theory results. Maps with branch points of degree higher than one, as well as ``microscopic surfaces'' play an important role in the sum. We discuss the underlying string theory.
  • gauge field theory: SU(N)
  • gauge field theory: U(N)
  • dimension: 2
  • Riemann surface
  • partition function
  • group theory: representation
  • string model
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