Improved lattice operators for non-relativistic fermions
arXiv:1203.2565 · doi:10.1103/PhysRevA.86.013604
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.
11 pages, 7 figures; replaced with published version
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Cited by in corpus (15)
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- Lattice methods for strongly interacting many-body systems
- Lattice Monte Carlo calculations for unitary fermions in a finite box
- Shear Viscosity of a Unitary Fermi Gas
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- Third- and fourth-order virial coefficients of harmonically trapped fermions in a semiclassical approximation
- Spectral properties and observables in ultracold Fermi gases