Particle Projection Using a Complex Langevin Method

Abstract

Using complex stochastic quantization, we implement a particle-number projection technique on the partition function of spin-1/2 fermions at finite temperature on the lattice. We discuss the method, its application towards obtaining the thermal properties of finite Fermi systems in three spatial dimensions, and results for the first five virial coefficients of one-dimensional, attractively interacting fermions.

arXiv commentProceedings of Lattice2017, Granada, Spain

References in corpus (7)

• Many-Body Physics with Ultracold Gases
• Theory of ultracold Fermi gases
• The Unitary Fermi Gas: From Monte Carlo to Density Functionals
• Approaches to the sign problem in lattice field theory
• Introductory lectures on lattice QCD at nonzero baryon number
• Lattice methods for strongly interacting many-body systems
• Universality in one-dimensional fermions at finite temperature: Density, pressure, compressibility, and contact

Cited by in corpus (1)

• Complex Langevin and other approaches to the sign problem in quantum many-body physics