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Originally published in Science Express on 1 March 2001
Science 30 March 2001:
Vol. 291. no. 5513, pp. 2556 - 2557
DOI: 10.1126/science.1060025
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Perspectives

QUANTUM PHYSICS:
Standing Room Only at the Quantum Scale

K. M. O'Hara and J. E. Thomas

Atoms may be bosons and fermions depending on their isotopic mass, and this determines their behavior at very low temperatures. Bosons form quantum degenerate gases called Bose-Einstein condensates. In their Perspective, O'Hara and Thomas highlight the work by Truscott et al., who have made a degenerate fermionic gas through a method called "sympathetic cooling." Such studies will shed light on many processes from superconductivity to the mechanisms driving neutron stars.

The authors are at the Department of Physics, Duke University, Durham, NC 27706, USA. E-mail: jet{at}phy.duke.edu

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