Non-Fermi liquid behavior of the drag and diffusion coefficients in QED plasma
Sreemoyee Sarkar, Abhee K. Dutt-Mazumder
TL;DR
This paper investigates the non-Fermi-liquid behavior of drag and diffusion coefficients in low-temperature QED plasma, revealing that subleading transverse photon contributions dominate over leading longitudinal terms.
Contribution
It provides a detailed calculation of drag and diffusion coefficients beyond leading order, highlighting the significance of soft transverse photon exchanges in non-Fermi-liquid regimes.
Findings
Subleading transverse photon contributions are larger than leading longitudinal terms.
Results are derived in closed form at zero and low temperature.
Non-Fermi-liquid behavior is explicitly demonstrated.
Abstract
We calculate the drag and diffusion coefficients in low temperature QED plasma and go beyond the leading order approximation. The non-Fermi-liquid behavior of these coefficients are clearly revealed. We observe that the subleading contributions due to the exchange of soft transverse photon in both cases are larger than the leading order terms coming from the longitudinal sector. The results are presented in closed form at zero and low temperature.
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