Nonrelativistic fermions with holographic interactions and the unitary Fermi gas

TL;DR

This paper introduces a holographic approach to compute nonrelativistic fermion spectra, revealing universal features of ultracold Fermi gases at unitarity through spectral functions, momentum distributions, and thermodynamics.

Contribution

It presents a novel holographic method to analyze nonrelativistic fermions, connecting holography with ultracold Fermi gas physics in a new way.

Findings

Results are universal and match known features of ultracold Fermi gases at unitarity.

Computed spectral functions and thermodynamic properties agree with experimental data.

Method provides a new tool for studying strongly correlated nonrelativistic fermionic systems.

Abstract

We present an alternative way of computing nonrelativistic single-particle spectra from holography. To this end, we introduce a mass gap in a holographic Dirac semimetal and subsequently study the nonrelativistic limit of the resulting spectral functions. We use this method to compute the momentum distributions and the equation of state of our nonrelativistic fermions, of which the latter can be used to extract all thermodynamic properties of the system. We find that our results are universal and reproduce many experimentally and theoretically known features of an ultracold Fermi gas at unitarity.