Monte Carlo Calculations for Fermi Gases in the Unitary Limit with a Zero-Range Interaction

Autor(es)

Pessoa, Renato ^{[1, 2]} ; Vitiello, S. A. ^[3] ; Schmidt, K. E. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Fed Goias, Inst Fis, BR-74001970 Goiania, Go - Brazil

^[2] Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 - USA

^[3] Univ Estadual Campinas UNICAMP, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF LOW TEMPERATURE PHYSICS; v. 180, n. 1-2, p. 168-179, JUL 2015.
• Citações Web of Science: 6

Resumo

An ultracold Fermi gas with a zero-range attractive potential in the unitary limit is investigated using variational and diffusion Monte Carlo methods. Previous calculations have used a finite-range interaction and extrapolate the results to zero-range. Here we extend the quantum Monte Carlo method to directly use a zero-range interaction without the need of an extrapolation. We employ a trial wave function with the correct boundary conditions and modify the sampling procedures to handle the zero-range interaction. The results are reliable and have low variance. (AU)

• Processo FAPESP: 10/10072-0 - Simulação em computadores de sistemas de muitas partículas quânticas
• Beneficiário: Silvio Antonio Sachetto Vitiello
• Modalidade de apoio: Auxílio à Pesquisa - Regular