Collapse of a Degenerate Fermi Gas

A degenerate gas of identical fermions is brought to collapse by the interaction with a Bose-Einstein condensate. We used an atomic mixture of fermionic potassium-40 and bosonic rubidium-87, in which the strong interspecies attraction leads to an instability above a critical number of particles. The...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 2002-09, Vol.297 (5590), p.2240-2243
Main Authors: Modugno, Giovanni, Roati, Giacomo, Riboli, Francesco, Ferlaino, Francesca, Brecha, Robert J., Inguscio, Massimo
Format: Article
Language:English
Subjects:
Astrophysics
Atomic interactions
Atoms
Atoms & subatomic particles
Bose-Einstein condensates
Bose-Einstein condensation
Bosons
Chemical reactions
Classical and quantum physics: mechanics and fields
Climate
Degenerate matter
Evaporation
Evolution
Exact sciences and technology
Fermions
Gases
Kinetics
Lead
Matter waves
Particle interactions
Physics
Quantum mechanics
Quantum theory
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Summary:A degenerate gas of identical fermions is brought to collapse by the interaction with a Bose-Einstein condensate. We used an atomic mixture of fermionic potassium-40 and bosonic rubidium-87, in which the strong interspecies attraction leads to an instability above a critical number of particles. The observed phenomenon suggests a direction for manipulating fermion-fermion interactions on the route to superfluidity.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.1077386