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arXiv · 1110.5126

Composite-Field Goldstone States and Higgs Mechanism in Dilute Bose Gases

Fred Cooper·Chih-Chun Chien·Bogdan Mihaila·John F. Dawson·Eddy Timmermans
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Abstract

We show that a composite-field (diatom) Goldstone state is expected in a dilute Bose gas for temperatures between the Bose gas critical temperature where the atom Bose-Einstein condensate appears and the temperature where superfluidity sets in. The presence of superfluidity is tied to the existence of a U(1) charge-two diatom condensate in the system. By promoting the global U(1) symmetry of the theory to a gauge symmetry, we find that the mass of the gauge particle generated through the Anderson-Higgs mechanism is related to the superfluid density via the Meissner effect and the superfluid density is related to the square of the anomalous density in the Bose system.

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Fred Cooper, Chih-Chun Chien, Bogdan Mihaila, John F. Dawson, Eddy Timmermans. 2012-02-13. Composite-Field Goldstone States and Higgs Mechanism in Dilute Bose Gases. https://doi.org/10.1103/physreva.85.023631

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