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arXiv:1409.1546 · Chemical Physics Letters

Pauli effects in uncertainty relations

I. V. Toranzo, Pablo Sánchez-Moreno, Rodolfo O. Esquivel, J. S. Dehesa

Published Sep 10, 2014• 13 citations
arXivHTMLPDF
DOI
10.1016/j.cplett.2014.08.064

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The zero-point energy of a trapped ultracold Fermi gas at unitarity is investigated in relation to the combined effects of the Heisenberg uncertainty principle and the Pauli principle. This lowest allowed quantum state is a superfluid state which has been studied extensively both experimentally and theoretically. The method used for the current investigation is based on a recent series of papers that proposed microscopic dynamics based on normal modes to describe superfluidity instead of real-space Cooper pairs. This approach yielded excellent agreement with experimental data for multiple properties and allowed the microscopic behavior underlying these results as well as the basis of universal behavior to be analyzed in detail using the group theoretic basis of this general N-body approach. This microscopic picture is now used to illucidate the roles played by the uncertainty principle and the Pauli principle in determining the energy and character of the lowest allowed quantum state including the squeezed character of this superfluid state and the suppression of the Pauli principle.