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A framework for studying a quantum critical metal in the limit N-f -> 0
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- Säterskog, Petter (author)
- Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Leiden University, The Netherlands,Nordita SU, Stockholm Univ, Roslagstullsbacken 23, SE-10691 Stockholm, Sweden.;Leiden Univ, Inst Lorentz ITP, POB 9506, NL-2300 RA Leiden, Netherlands.
- (creator_code:org_t)
- Stichting SciPost, 2018
- 2018
- English.
- In: SciPost Physics. - : Stichting SciPost. - 2542-4653. ; 4:3
- Journal article (peer-reviewed)
Abstract
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- We study a model in 1 + 2 dimensions composed of a spherical Fermi surface of N-f flavors of fermions coupled to a massless scalar. We present a framework to non-perturbatively calculate general fermion n-point functions of this theory in the limit N-f -> 0 followed by k(F) -> infinity where k(F) sets both the size and curvature of the Fermi surface. Using this frame-work we calculate the zero-temperature fermion density-density correlation function in real space and find an exponential decay of Friedel oscillations.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
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- ref (subject category)
- art (subject category)
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