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arXiv · 1011.3026

Lattice calculation for unitary fermions in a finite box

Jong-Wan Lee·Michael G. Endres·David B. Kaplan·Amy N. Nicholson
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Abstract

A fundamental constant in systems of unitary fermions is the so-called Bertsch parameter, the ratio of the ground state energy for spin paired unitary fermions to that for free fermions at the same density. I discuss how we computed this parameter as well as the pairing gap using a recently developed lattice construction for unitary fermions, by measuring correlation functions for up to 38 fermions in a finite box. Our calculation illustrates interesting issues facing the study of many-body states on the lattice, which may eventually be confronted in QCD calculations as well.

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Jong-Wan Lee, Michael G. Endres, David B. Kaplan, Amy N. Nicholson. 2010-11-12. Lattice calculation for unitary fermions in a finite box. https://arxiv.org/abs/1011.3026

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