Magnetic susceptibility and low-temperature specific-heat of integrable 1-D Hubbard model under open-boundary conditions

TL;DR

This paper analytically investigates the magnetic susceptibility and low-temperature specific heat of the 1D Hubbard model with open boundaries, highlighting boundary field effects using Bethe ansatz solutions.

Contribution

It provides exact analytical expressions for boundary contributions to susceptibility and specific heat in the integrable 1D Hubbard model.

Findings

Boundary fields significantly affect magnetic susceptibility.

Exact formulas for boundary contributions to specific heat.

Analytical solutions based on Bethe ansatz with string hypothesis.

Abstract

The magnetic susceptibility and the low-temperature specific heat of the 1-dimensional Hubbard model under the integrable open-boundary conditions are discussed through the Bethe ansatz with the string hypothesis. The contributions of the boundary fields to both the susceptibility and the specific heat are obtained, and their exact expressions are analytically derived.