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Evaluation of the Witten Index in 1+1 Dimensional Supersymmetric Models with O(N) Symmetry |
| YU Yangzheng;LIN Tingting |
| Department of Physics, Xiamen University, Xiamen 361005 |
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| Cite this article: |
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YU Yangzheng, LIN Tingting 1991 Chin. Phys. Lett. 8 168-171 |
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Abstract We present a way to calculate the Witten index Δ for a class of l+l dimensional supersymmetric (SUSY) models with O(N) symmetry. Since Δ is invariant under an adiabatic change of parameters, an O(N) non-invariant but SUSY term 2hФN is added to the Lagrangian, therefore the degeneracy of zero-energy states due to O(N) symmetry is removed. It is shown that SUSY breaking can occur for the SUSY O(N) Wess-Zumino model.
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11.30.Pb
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Published: 01 April 1991
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