Quantum Monte Carlo simulation of three-dimensional Bose-Fermi mixtures

TL;DR

This paper uses quantum Monte Carlo simulations to study three-dimensional Bose-Fermi mixtures on optical lattices, focusing on superfluid transition, particle densities, and induced interactions at finite temperature.

Contribution

It introduces a lattice quantum chromodynamics approach to explore the microscopic properties and phase transitions of Bose-Fermi mixtures in three dimensions.

Findings

Bosonic superfluid transition depends on boson-fermion coupling strength

Particle densities and pair occupancies are affected by boson-fermion interactions

Induced fermion-fermion interactions are clearly observed

Abstract

Exploratory simulations of Bose-Fermi mixtures on the three-dimensional optical lattice at finite temperature are performed by adopting the lattice quantum chromodynamics technique. We analyze the bosonic superfluid transition and its dependence on the strength of the boson-fermion coupling. The particle densities and the pair occupancies are also studied to understand the effect of the boson-fermion coupling to the microscopic properties of the system. Effect of the induced fermion-fermion interaction by the boson density fluctuation is clearly seen.