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Updated: May 26, 2026

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Published on: March 30, 2017
Transport properties of a boundary-driven one-dimensional gas of spinless fermions
Marko Znidarič1, Bojan Zunkovič, Tomaž Prosen
1Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Cuernavaca, Mexico.
Abstract:
We analytically study a system of spinless fermions driven at the boundary with an oscillating chemical potential. Various transport regimes can be observed: At zero driving frequency the particle current through the system is independent of the system's length; at the phase-transition frequency, being equal to the bandwidth, the current decays as ~n(-α) with the chain length n, α being either 2 or 3; below the transition the scaling of the current is ~n(-1/2), indicating anomalous transport, while it is exponentially small ~exp(-n/2ξ) above the transition. Therefore, by a simple change of frequency of the a.c. driving of the system one can vary transport from ballistic, anomalous to insulating.
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