One-loop divergences in the 6D, abelian gauge theory

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• 作者：I.L. Buchbinder^a ; ^b ; ^{joseph@tspu.edu.ru} ; E.A. Ivanov^c ; ^{eivanov@theor.jinr.ru} ; B.S. Merzlikin^a ; ^d ; ^{merzlikin@tspu.edu.ru} ; K.V. Stepanyantz^e ; ^{stepan@m9com.ru}
• 刊名：Physics Letters B
• 出版年：2016
• 出版时间：10 December 2016
• 年：2016
• 卷：763
• 期：Complete
• 页码：375-381
• 全文大小：368 K
• 卷排序：763

文摘

We consider, in the harmonic superspace approach, the six-dimensional N=(1,0)N=(1,0) supersymmetric model of abelian gauge multiplet coupled to a hypermultiplet. The superficial degree of divergence is evaluated and the structure of possible one-loop divergences is analyzed. Using the superfield proper-time and background-field technique, we compute the divergent part of the one-loop effective action depending on both the gauge multiplet and the hypermultiplet. The corresponding counterterms contain the purely gauge multiplet contribution together with the mixed contributions of the gauge multiplet and hypermultiplet. We show that the theory is on-shell one-loop finite in the gauge multiplet sector in agreement with the results of [1]. The divergences in the mixed sector cannot be eliminated by any field redefinition, implying the theory to be UV divergent at one loop.