UV/IR mixing in non-Fermi liquids: higher-loop corrections in different energy ranges

Ipsita Mandal ()
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Ipsita Mandal: Perimeter Institute for Theoretical Physics

The European Physical Journal B: Condensed Matter and Complex Systems, 2016, vol. 89, issue 12, 1-20

Abstract: Abstract We revisit the Ising-nematic quantum critical point with an m-dimensional Fermi surface by applying a dimensional regularization scheme, introduced in [I. Mandal, S.S. Lee, Phys. Rev. B 92, 035141 (2015)]. We compute the contribution from two-loop and three-loop diagrams in the intermediate energy range controlled by a crossover scale. We find that for m = 2, the corrections continue to be one-loop exact for both the infrared and intermediate energy regimes.

Keywords: Solid; State; and; Materials (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1140/epjb/e2016-70509-4

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