Universal Fermi distribution of semiclassical nonequilibrium Fermi states

Eldad Bettelheim*, Paul B. Wiegmann

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


When a classical device suddenly perturbs a degenerate Fermi gas, a semiclassical nonequilibrium Fermi state arises. Similar states appear when a charge is transferred into a Fermi gas through a localized contact. Semiclassical Fermi states are characterized by a Fermi energy or Fermi momentum that slowly depends on space and/or time. We show that the Fermi distribution of a semiclassical Fermi state has a universal nature. It is described by Airy functions regardless of the details of the perturbation.

Original languageAmerican English
Article number085102
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number8
StatePublished - 18 Aug 2011


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