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A framework for studying a quantum critical metal in the limit N-f -> 0
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA. Stockholm Univ, Roslagstullsbacken 23, SE-10691 Stockholm, Sweden.;Leiden Univ, Inst Lorentz ITP, POB 9506, NL-2300 RA Leiden, Netherlands..
2018 (English)In: SCIPOST PHYSICS, ISSN 2542-4653, Vol. 4, no 3, article id 015Article in journal (Refereed) Published
Abstract [en]

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. (C) Copyright P. Saterskog.

Place, publisher, year, edition, pages
SCIPOST FOUNDATION , 2018. Vol. 4, no 3, article id 015
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Physical Sciences
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URN: urn:nbn:se:kth:diva-230553DOI: 10.21468/SciPostPhys.4.3.015ISI: 000432739600002OAI: oai:DiVA.org:kth-230553DiVA, id: diva2:1220930
Note

QC 20180619

Available from: 2018-06-19 Created: 2018-06-19 Last updated: 2018-06-19Bibliographically approved

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