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Supersymmetric Euler-Heisenberg effective action: Two-loop results

Sergei M. Kuzenko·Simon J. Tyler
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Abstract

The two-loop Euler-Heisenberg-type effective action for N = 1 supersymmetric QED is computed within the background field approach. The background vector multiplet is chosen to obey the constraints D_\a W_\b = D_{(\a} W_{\b)} = const, but is otherwise completely arbitrary. Technically, this calculation proves to be much more laborious as compared with that carried out in hep-th/0308136 for N = 2 supersymmetric QED, due to a lesser amount of supersymmetry. Similarly to Ritus' analysis for spinor and scalar QED, the two-loop renormalisation is carried out using proper-time cut-off regularisation. A closed-form expression is obtained for the holomorphic sector of the two-loop effective action, which is singled out by imposing a relaxed super self-duality condition.

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Sergei M. Kuzenko, Simon J. Tyler. 2007-04-20. Supersymmetric Euler-Heisenberg effective action: Two-loop results. https://doi.org/10.1088/1126-6708%2F2007%2F05%2F081

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