Quasiclassical approach to Bose condensation in a finite potential well
| Autor: | Hartmut Haug, A. M. Bundaru, Ladislaus Alexander Bányai |
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| Rok vydání: | 2004 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Distribution (number theory) Condensed Matter::Other Numerical analysis Exciton Condensed Matter (cond-mat) Condensation FOS: Physical sciences Condensed Matter Condensed Matter Physics Electronic Optical and Magnetic Materials Connection (mathematics) law.invention Classical mechanics law Quantum mechanics Signature (topology) Bose–Einstein condensate Boson |
| Zdroj: | Physical Review B. 70 |
| ISSN: | 1550-235X 1098-0121 |
| Popis: | We treat the problem of self-consistently interacting bosons in the presence of a finite (but macroscopic) potential well within a quasi-classical approximation for the normal component and the order parameter. We solve the equilibrium problem and show, that actually condensation occurs in two steps. One already at low densities with Bose condensation only in the well and another one corresponding to the usual condensation in bulk. The peak and width of the distribution of trapped particles in the well display a distinct signature of the local condensation. A possible connection to recent experiments with excitons is discussed. |
| Databáze: | OpenAIRE |
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