Superspace approach to the renormalization of the O'Raifeartaigh model up to the second order in the LDE parameter
arXiv:1203.3891 · doi:10.1103/PhysRevD.85.125032
Abstract
We adopt a superspace/supergraph formalism to pursue the investigation of the structure of one- and two-loop divergences in the frame of the minimal O'Raifeartaigh model that realizes the F-term spontaneous supersymmetry breaking. The linear delta expansion(LDE) procedure is introduced and renormalization is carried out up to the second order in the LDE expansion parameter. In agreement with the nonrenormalization theorem for the (chiral/antichiral) matter potential of supersymmetry, our explicit supergraph calculations confirm that only the Kähler potential is actually renomalized.
arXiv comment23 pages, 4 figures, revtex4. arXiv admin note: text overlap with arXiv:0904.4672
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