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This article is cited in 19 scientific papers (total in 19 papers)
The method of uniqueness and the optical conductivity of graphene: New application of a powerful technique for multiloop calculations
S. Teberab, A. V. Kotikovc a Université Pierre et Marie Curie, Sorbonne Universités, Paris, France
b Laboratoire de Physique Théorique et Hautes Énergies, CNRS, Université Pierre et Marie Curie (Paris 6), Paris, France
c Bogoliubov Laboratory of Theoretical Physics, Joint
Institute for Nuclear Research, Dubna, Moscow Oblast, Russia
Abstract:
We briefly review the uniqueness method, which is a powerful technique for calculating multiloop Feynman diagrams in theories with conformal symmetries. We use the method in the momentum space and show its effectiveness in calculating a two-loop massless propagator Feynman diagram with a noninteger index on the central line. We use the obtained result to compute the optical conductivity of graphene at the infrared Lorentz-invariant fixed point. We analyze the effect of counterterms and compare with the nonrelativistic limit.
Keywords:
Feynman diagram, multiloop calculations, uniqueness, graphene, optical conductivity.
Received: 04.02.2016
Citation:
S. Teber, A. V. Kotikov, “The method of uniqueness and the optical conductivity of graphene: New application of a powerful technique for multiloop calculations”, TMF, 190:3 (2017), 519–532; Theoret. and Math. Phys., 190:3 (2017), 446–457
Linking options:
https://www.mathnet.ru/eng/tmf9161https://doi.org/10.4213/tmf9161 https://www.mathnet.ru/eng/tmf/v190/i3/p519
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Abstract page: | 398 | Full-text PDF : | 127 | References: | 51 | First page: | 19 |
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