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arXiv · 1203.2565

Improved lattice operators for non-relativistic fermions

Joaquín E. Drut
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Abstract

In this work I apply a recently proposed improvement procedure, originally conceived to reduce finite lattice spacing effects in transfer matrices for dilute Fermi systems, to tuning operators for the calculation of observables. I construct, in particular, highly improved representations for the energy and the contact, as a first step in an improvement program for finite-temperature calculations. I illustrate the effects of improvement on those quantities with a ground-state lattice calculation at unitarity.

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Joaquín E. Drut. 2012-03-12. Improved lattice operators for non-relativistic fermions. https://doi.org/10.1103/physreva.86.013604

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