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Chen JY. Static Magnetic Response of Non-Fermi-Liquid Density. Phys Rev Lett. 2017;119(9):096601doi: 10.1103/PhysRevLett.119.096601.
Chen, J. Y. (2017). Static Magnetic Response of Non-Fermi-Liquid Density. Physical review letters, 119(9), 096601. https://doi.org/10.1103/PhysRevLett.119.096601
Chen, Jing-Yuan. "Static Magnetic Response of Non-Fermi-Liquid Density." Physical review letters vol. 119,9 (2017): 096601. doi: https://doi.org/10.1103/PhysRevLett.119.096601
Chen JY. Static Magnetic Response of Non-Fermi-Liquid Density. Phys Rev Lett. 2017 Sep 01;119(9):096601. doi: 10.1103/PhysRevLett.119.096601. Epub 2017 Aug 31. PMID: 28949560.
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Phys Rev Lett. 2017 Sep 01;119(9):096601. doi: 10.1103/PhysRevLett.119.096601. Epub 2017 Aug 31.

Static Magnetic Response of Non-Fermi-Liquid Density.

Physical review letters

Jing-Yuan Chen

Affiliations

  1. Stanford Institute for Theoretical Physics, Stanford University, Stanford, California 94305, USA.

PMID: 28949560 DOI: 10.1103/PhysRevLett.119.096601

Abstract

We consider the response of the density of a fermion ensemble to an applied weak static magnetic field. It is known that, for a noninteracting Fermi gas, this response is fully characterized by the Fermi volume and the Berry curvature on the Fermi surface. Here we show the same result holds for interacting fermions, including a Fermi liquid and a non-Fermi liquid, to all orders in perturbation theory. Our result relies only on the assumption of a well-defined Fermi surface and the general analytic properties of quantum field theory, and is completely model independent.

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