Harmonically Trapped Fermions in Two Dimensions: Ground-State Energy and Contact of SU(2) and SU(4) Systems via a Nonuniform Lattice Monte Carlo Method

Authors

Zhihuan Luo, South China Agricultural University
Casey E. Berger, College of Arts & SciencesFollow
Joaquín E. Drut, College of Arts & Sciences

Document Type

Article

Publication Date

3-2-2016

Publication Title

Physical Review A

Abstract

We study harmonically trapped, unpolarized fermion systems with attractive interactions in two spatial dimensions with spin degeneracies Nf=2 and 4 and N/Nf=1,3,5, and 7 particles per flavor. We carry out our calculations using our recently proposed quantum Monte Carlo method on a nonuniform lattice. We report on the ground-state energy and contact for a range of couplings, as determined by the binding energy of the two-body system, and show explicitly how the physics of the Nf-body sector dominates as the coupling is increased.

Volume

93

Issue

3

DOI

10.1103/PhysRevA.93.033604

ISSN

24699926

Rights

©2016 American Physical Society

Comments

Archived as published.

Recommended Citation

Luo, Zhihuan; Berger, Casey E.; and Drut, Joaquín E., "Harmonically Trapped Fermions in Two Dimensions: Ground-State Energy and Contact of SU(2) and SU(4) Systems via a Nonuniform Lattice Monte Carlo Method" (2016). Physics: Faculty Publications, Smith College, Northampton, MA.
https://scholarworks.smith.edu/phy_facpubs/104