| HAL : hal-00001411, version 1 |
| arXiv : cond-mat/9905430 |
| DOI : 10.1103/PhysRevLett.83.1703 |
| Fiche détaillée | Récupérer au format |
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| Physical Review Letters 83 (1999) 1703-1706 |
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| The transition temperature of the dilute interacting Bose gas |
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| Gordon Baym1, 2, 3Jean-Paul Blaizot2Markus Holzmann1, 4Dominique Vautherin5Franck Laloë1 |
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| (1999) |
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| We show that the critical temperature of a uniform dilute Bose gas increases linearly with the s-wave scattering length describing the repulsion between the particles. Because of infrared divergences, the magnitude of the shift cannot be obtained from perturbation theory, even in the weak coupling regime; rather, it is proportional to the size of the critical region in momentum space. By means of a self-consistent calculation of the quasiparticle spectrum at low momenta at the transition, we find an estimate of the effect in reasonable agreement with numerical simulations. |
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| Domaine | : | Physique/Matière Condensée/Mécanique statistique |
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| critical temperature – Bose Einstein – dilute quantum gas |
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| Lien vers le texte intégral : |
| hal-00001411, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00001411 | |
| oai:hal.archives-ouvertes.fr:hal-00001411 | |
| Contributeur : Franck Laloë | |
| Soumis le : Samedi 3 Avril 2004, 19:10:19 | |
| Dernière modification le : Mercredi 30 Mai 2007, 21:02:24 | |