Quantum Corrections to Holographic Strange Metal at Low Temperature

TL;DR

This paper investigates quantum gravitational effects on holographic strange metals at low temperatures, revealing corrections to conductivity and resistivity that could explain experimental anomalies and differ from previous models.

Contribution

It introduces quantum corrections to the holographic model of strange metals using Jackiw-Teitelboim gravity, providing new insights into transport properties at low temperatures.

Findings

Quantum corrections modify DC resistivity and optical conductivity.

The approach offers a potential explanation for anomalous power-law behavior.

Differences between quantum-corrected holography and SYK model are highlighted.

Abstract

The holographic approach to the strange metal phase relies on near-extremal asymptotically AdS$_4$ electrically charged black branes with important input from their AdS$_2$ near-horizon throat geometry. Motivated by the current understanding of the role of quantum fluctuations in the throat of near-extremal black holes, we revisit some transport properties. We model quantum gravitational and gauge fluctuations in the throat region by adopting results in Jackiw-Teitelboim gravity, effectively leading to quantum corrections for the dual CFT$_1$ Green's function in the near-horizon infrared region. We use the quantum-corrected Green's function to compute the conductivity for (2+1)-dimensional holographic strange metals and obtain corrections for the DC resistivity and the optical conductivity. We also compare the quantum-corrected holographic approach with results from the complex Sachdev-Ye-Kitaev model and point out qualitative differences. Although experimental detection for the quantum-corrected holographic approach to the DC resistivity requires higher precision than current experimental accuracy, future experiments with improved technologies could detect these quantum corrections. Interestingly, including quantum corrections to the optical conductivity does provide a plausible explanation for the experimental anomalous power-law behavior detected in various strange metals.