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

Pessoa, Renato; Vitiello, S. A.; Schmidt, K. E.

Advanced search

Search - Use quotation marks to get a more specific result

Index

Field of knowledge

Start date

Betweenand

(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

Full text
Author(s):	Pessoa, Renato ^{[1, 2]} ; Vitiello, S. A. ^[3] ; Schmidt, K. E. ^[2] Total Authors: 3
Affiliation:	^[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 Total Affiliations: 3
Document type:	Journal article
Source:	JOURNAL OF LOW TEMPERATURE PHYSICS; v. 180, n. 1-2, p. 168-179, JUL 2015.
Web of Science Citations:	6
Abstract
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)

FAPESP's process:	10/10072-0 - Computer simulations of quantum many-body systems
Grantee:	Silvio Antonio Sachetto Vitiello
Support Opportunities:	Regular Research Grants

Short URL