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A framework for studying a quantum critical metal in the limit N-f -> 0
Stockholm University, Nordic Institute for Theoretical Physics (Nordita). Leiden University, The Netherlands.
Number of Authors: 12018 (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.

Place, publisher, year, edition, pages
2018. Vol. 4, no 3, article id 015
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-157831DOI: 10.21468/SciPostPhys.4.3.015ISI: 000432739600002OAI: oai:DiVA.org:su-157831DiVA, id: diva2:1223948
Available from: 2018-06-26 Created: 2018-06-26 Last updated: 2018-06-26Bibliographically approved

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