Wednesday, April 17, 2013

1304.4451 (Maja Buric et al.)

The role of the Seiberg-Witten field redefinition in renormalization of
noncommutative chiral electrodynamics
   [PDF]

Maja Buric, Dusko Latas, Biljana Nikolic, Voja Radovanovic
It has been conjectured in the literature that renormalizability of the $\theta$-expanded noncommutative gauge theories improves when one takes into account full nonuniqueness of the Seiberg-Witten expansion, which relates noncommutative (`high-energy') with commutative (`low-energy') fields. In order to check this conjecture we analyze renormalizability of the noncommutative chiral electrodynamics: we quantize the action which contains all possible terms implied by the SW map. After renormalization we arrive at a different theory in which the relation between the coupling constants is changed. This means that the $\theta$-expanded chiral electrodynamics is not renormalizable: when fermions are included, the SW expansion is not preserved in quantization.
View original: http://arxiv.org/abs/1304.4451

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