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Friedel oscillations in phase space: Wigner function of trapped interacting fermions

F Gleisberg1, W P Schleich2 and W Wonneberger1

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The Wigner function W(z,k) for a model of interacting one-dimensional fermions confined to a harmonic trap is evaluated at zero temperature. The model considers two hyperfine states of the same fermionic species and treats the dominant interactions between the two using the bosonization method. Interactions substantially modify the shape of the Wigner function. Irrespective of the sign of the coupling constant, the Friedel oscillations inherent in the Wigner function are enhanced in the k-direction and suppressed in the z-direction.


PACS

05.30.Fk Fermion systems and electron gas

37.10.De Atom cooling methods

Subjects

Atomic and molecular physics

Quantum gases, liquids and solids

Statistical physics and nonlinear systems

Dates

Issue 23 (14 December 2001)

Received 20 August 2001

Published 21 November 2001



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