Cosmic Implications of Bosanovae, the controlled collapse of a Bose Einstein Condensate

Details Cosmic Implications of Bosanovae, the controlled collapse of a Bose Einstein Condensate Cosmic Implications of Bosanovae, the controlled collapse of a Bose Einstein Condensate

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aps..apr.u6002h&link_type=abstract

American Physical Society, April Meeting, 2003, April 5-8, 2003 Philadelphia, Pennsylvania, MEETING ID: APR03, abstract #U6.002

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Phenomena associated with the controlled collapse of a Bose-Einstein condensate (Bosenova) described in the experiment of Donley et al, Nature 412, 295 (2001) are explained here as a consequence of the squeezing and parametric amplification of quantum fluctuations above the condensate by the condensate dynamics. This simple physical picture provides an excellent quantitative fit with experimental data on the scaling behavior of the collapse time and the amount of particles emitted in the jets. The underlying mechanisms are the same as those accountable for cosmological particle creation, structure formation and spinodal instability in phase transitions. One can thus view the Bosenovae experiment as a table-top analog model for these cosmological processes and conceivably design experiments with BEC dynamics to test out other basic mechanisms and generic features of quantum processes in the early universe, thus opening a new venue for performing `laboratory cosmology'. (Note, however, this is not the physical process behind the Hawking effect of black hole particle creation.)

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