Two-superfluid Model of Two-component Bose-Einstein Condensates; First Sound and Second Sound - Condensed Matter > Quantum GasesReport as inadecuate




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Abstract: Superfluid $^4$He at a finite temperature is described by the two-fluid modelwith the normal fluid component and the superfluid component.We formulate thetwo-fluid model for two-component BECs, namely two-superfluid model, startingfrom the coupled Gross-Pitaevskii equations.The two-superfluid model wellcorresponds to the two-fluid model in superfluid $^4$He.In a special condition,the two sound modes in the two-superfluid model behave like first and secondsounds in the two-fluid model of superfluid $^4$He.



Author: Shungo. Ishino, Hiromitsu Takeuchi, Makoto. Tsubota

Source: https://arxiv.org/




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