Quantum breathing mode of trapped bosons and fermions at arbitrary coupling

Details Quantum breathing mode of trapped bosons and fermions at arbitrary coupling Quantum breathing mode of trapped bosons and fermions at arbitrary coupling

2009-03-11

arxiv.org/abs/0903.1993v2

Phys. Rev. B 80 (2009) 054515

Physics

Quantum Physics

Scientific paper

An analysis of the quantum breathing behavior of few-particle Coulomb systems in one- and two-dimensional harmonic traps is presented. We report the existence of \emph{two independent breathing modes} and present exact numerical results for two particles at any coupling strength which smoothly connect the two known limits of an \emph {ideal} quantum and a strongly coupled \emph {classical} system. Substantial differences in the breathing frequency of two-dimensional fermions and bosons are observed which may be used as a sensitive experimental tool to probe confined interacting quantum systems.

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