On effective Kähler potential in N=2, d=3 SQED / I. L. Bukhbinder, B. S. Merzlikin

Уровень набора: Physics Letters B = 1967-Основной Автор-лицо: Bukhbinder, I. L., Iosif LvovichАльтернативный автор-лицо: Merzlikin, B. S., mathematician, research engineer, senior teacher Tomsk Polytechnic University, candidate of physico-mathematical Sciences, 1987-, Boris SergeevichКоллективный автор (вторичный): Национальный исследовательский Томский политехнический университет (ТПУ), Физико-технический институт (ФТИ), Кафедра высшей математики и математической физики (ВММФ)Язык: английский.Резюме или реферат: We compute the two-loop effective Kдhler potential in three-dimensional N=2 supersymmetric electrodynamics with Chern–Simons kinetic term for the gauge superfield. The effective action is constructed on the base of background field method with one parametric family of gauges. In such an approach, the quadratic part of quantum action mixes the gauge and matter quantum superfields yielding the complications in the computations of the loop supergraphs. To avoid this obstacle and preserve dependence on the gauge parameter we make a non-local change of quantum matter superfields after which the propagator is diagonalized, however the new vertices have appeared. We fix the suitable background and develop the efficient procedure of calculating the two-loop supergraphs with the new vertices. We compute the divergent and finite parts of the superfield effective action, find the two-loop effective Kдhler potential and show that it does not depend on the gauge parameter..Примечания о наличии в документе библиографии/указателя: [References.: p. 101-103 (45 tit.)].Аудитория: .Тематика: электронный ресурс | труды учёных ТПУ Ресурсы он-лайн:Щелкните здесь для доступа в онлайн
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[References.: p. 101-103 (45 tit.)]

We compute the two-loop effective Kдhler potential in three-dimensional N=2 supersymmetric electrodynamics with Chern–Simons kinetic term for the gauge superfield. The effective action is constructed on the base of background field method with one parametric family of gauges. In such an approach, the quadratic part of quantum action mixes the gauge and matter quantum superfields yielding the complications in the computations of the loop supergraphs. To avoid this obstacle and preserve dependence on the gauge parameter we make a non-local change of quantum matter superfields after which the propagator is diagonalized, however the new vertices have appeared. We fix the suitable background and develop the efficient procedure of calculating the two-loop supergraphs with the new vertices. We compute the divergent and finite parts of the superfield effective action, find the two-loop effective Kдhler potential and show that it does not depend on the gauge parameter.

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