A new approach for studying large numbers of fermions in the unitary regime

Details A new approach for studying large numbers of fermions in the unitary regime A new approach for studying large numbers of fermions in the unitary regime

2010-11-13

arxiv.org/abs/1011.3089v2

PoS Lattice2010:182,2010

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 4 figures, Presented at the XXVIII International Symposium on Lattice Field Theory, June 14-19, 2010, Villasimius, Sa

Scientific paper

A novel lattice approach is presented for studying systems comprising a large number of interacting nonrelativistic fermions. The construction is ideally suited for numerical study of fermions near unitarity--a strongly coupled regime corresponding to the two-particle s-wave scattering phase shift delta_0 = pi/2. Such systems may be achieved experimentally with trapped atoms, and provide a starting point for an effective field theory description of nuclear physics. We discuss the construction of our lattice theory, which allows us to study systems of up to (but by no means limited to) 38 fermions with high accuracy and modest computational resources, and offer an overview of several applications of the technique. A more detailed discussion of applications and simulation results will be described in companion proceedings by A. N. N. and J-W. L.

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