Quantum degenerate Fermi and Bose gases
| Autor: | Christophe Salomon, J. Cubizolles, Thomas Bourdel, Sjjmf Servaas Kokkelmans, D. Magalhaes, Lev Khaykovich |
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| Rok vydání: | 2003 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Superconductivity Condensed matter physics High Energy Physics::Lattice Degenerate energy levels chemistry.chemical_element Fermi energy Fermion Electron BCS theory law.invention Superfluidity chemistry law Atom Lithium Physics::Atomic Physics Atomic physics Feshbach resonance Fermi gas Quantum Bose–Einstein condensate Boson |
| Zdroj: | 2003 European Quantum Electronics Conference. EQEC 2003 (IEEE Cat No.03TH8665). |
| DOI: | 10.1109/eqec.2003.1314145 |
| Popis: | Recent experiments performed with fermionic /sup 6/Li and /sup 40/K atoms, which possess both Feshbach resonances at convenient magnetic fields are discussed. When /sup 40/K is mixed with a Bose-Einstein condensate of /sup 87/Rb, for sufficient atom numbers of both species, a collapse of the Fermi gas is observed. This is the result of the strong interspecies attractive interaction which overcomes the Fermi pressure in the quantum degenerate regime. As for the case of phonon-induced interaction between electrons in superconductors, it is predicted that the boson-fermion attractive interaction favors Cooper pairing of fermions when prepared in a mixture of two states. |
| Databáze: | OpenAIRE |
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