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Springer eBooks

Neutral Atom Traps for Bose-Einstein Condensation

B. N. Jagatap, A. P. Marathe, K. G. Manohar, R. C. Sethi, S. A. Ahmad

Published Jan 1, 2000• 1 citation
Publisher
DOI
10.1007/978-1-4615-4259-9_18

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We describe a method for finding the excitation frequencies of a Bosecondensed collection of trapped, neutral atoms. These excitations are the equivalents of the collisionless phonons in a homogeneous gas. Numerical results for a small assembly of trapped atoms are also presented. We discuss how one may be able to use these excitations as diagnostics of Bose condensates formed, for example, in evaporative cooling of alkali atoms. I. INTRODUCTION Now that Bose-Einstein condensation (BEC) has been achieved in a magnetic, alkalivapor trap [1], we soon hope to be able to look at its dynamical behavior. The approach used to produce this condensate combined laser- and evaporative-cooling techniques [2,3]. By the standards of most condensed-matter experiments, however, the trap used in this experiment was very small and the condensate formed in it correspondingly very inhomogeneous. Planning and analyzing experiments to probe this novel condensate requires a theory of how it responds to ext...