Critical properties of 1D spin-gapped fermions at the onset of magnetization

TL;DR

This paper develops an effective field theory to analyze the critical behavior of one-dimensional spin-gapped fermions at the onset of magnetization, revealing how spin-charge interactions influence critical properties and susceptibilities.

Contribution

It introduces a novel effective field theory framework for understanding critical phenomena in 1D spin-gapped fermions at magnetization onset, emphasizing spin-charge coupling effects.

Findings

Spin-charge interaction causes linear critical behavior.

Finite susceptibility observed across various models.

Potential experimental implications in cold atomic gases.

Abstract

We develop an effective field theory for finding critical properties of 1D spin gapped fermions at the onset of magnetization. It is shown how the spin-charge interaction leads to a linear critical behavior and finite susceptibility for a wide range of models. We also discuss possible manifestations of spin-charge coupling in cold atomic gases.