Mass, confinement and CP invariance in the Seiberg-Witten model
May, 199611 pages
Published in:
- Phys.Lett.B 388 (1996) 90-96
e-Print:
- hep-th/9605178 [hep-th]
Report number:
- GEF-TH-6-1996
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Abstract:
Several physics aspects of the Seiberg-Witten solution of N=2 supersymmetric Yang-Mills theory with SU(2) gauge group, supplemented with a small mass term for the "matter" fields which leads to an N=1 theory with confinement, are discussed. The light spectrum of the theory is understood on the basis of current algebra relations, and the theta parameter dependence of the massless and the massive theories is studied. We find that in the massive (confining) theory the low energy physics does not depend on the theta parameter and has an exact CP symmetry, contrary to what is expected on the general ground. It is suggested that the same mechanism may also be at work in ordinary QCD, solving naturally the strong CP puzzle.Note:
- Latex file, 13 pages, plus 1 eps Figure file Report-no: GEF-Th-6/1996
- gauge field theory: Yang-Mills
- gauge field theory: SU(2)
- supersymmetry
- current: correlation function
- mass spectrum
- confinement
- invariance: CP
- spontaneous symmetry breaking
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