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T-c for trapped dilute Bose gases
Title T-c for trapped dilute Bose gases Subtitle a second-order result Author info Peter Arnold, Boris Tomášik Author Arnold Peter (50%)
Co-authors Tomášik Boris 1972- (50%) UMBFP06 - Katedra fyziky
Source document Physical Review A : covering atomic, molecular, and optical physics and quantum information. Vol. 64, no. 5 (2001), pp. [1-21]. - Maryland : American Physical Society, 2001 Keywords condensation fyzika - physics Language English Country United States of America systematics 53 Annotation For some time, the theoretical result for the transition temperature of a dilute three-dimensional Bose gas in an arbitrarily wide harmonic trap has been known to first order in the interaction strength. We extend that result to second order. The first-order result for a gas trapped in a harmonic potential can be computed in mean-field theory (in contrast to the first-order result for a uniform gas, which cannot). We show that, at second order, perturbation theory suffices for relating the transition temperature to the chemical potential at the transition, but the chemical potential is nonperturbative at the desired order. The necessary information about the chemical potential can be extracted, however, from recent lattice simulations of uniform Bose gases. Public work category ADC No. of Archival Copy 40175 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika 
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