Thermodynamics of a Modified Fermi-Hubbard Model

Abstract

A recently introduced recurrence-relation ansatz applied to the Fermi-Hubbard model gives rise to a soluble model and here is used to calculate several thermodynamic observables. The constraint of unit density per site, density = 1, is applied and some of the results are compared to cases where the constraint is not imposed. The modified model exhibits a continuous phase transition (second order) reminiscent of the integer quantum Hall resistance and a ground state, first-order phase transition.

References in corpus (3)

• Observing ground-state properties of the Fermi-Hubbard model using a scalable algorithm on a quantum computer
• Universal thermodynamics of an SU($N$) Fermi-Hubbard Model
• Equation of State and Thermometry of the 2D SU($N$) Fermi-Hubbard Model