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arXiv · 1807.04754

A critical strange metal from fluctuating gauge fields in a solvable random model

Aavishkar A. Patel·Subir Sachdev
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Abstract

Building upon techniques employed in the construction of the Sachdev-Ye-Kitaev (SYK) model, which is a solvable $0+1$ dimensional model of a non-Fermi liquid, we develop a solvable, infinite-ranged random-hopping model of fermions coupled to fluctuating U(1) gauge fields. In a specific large-$N$ limit, our model realizes a gapless non-Fermi liquid phase, which combines the effects of hopping and interaction terms. We derive the thermodynamic properties of the non-Fermi liquid phase realized by this model, and the charge transport properties of an infinite-dimensional version with spatial structure.

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Aavishkar A. Patel, Subir Sachdev. 2018-07-12. A critical strange metal from fluctuating gauge fields in a solvable random model. https://doi.org/10.1103/physrevb.98.125134

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