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Search for Axion-like Particles from the Sun in an Underground Negative-Ion TPC

Nuclear and Particle Physics Proceedings Elsevier 134 (2004) 130-132

Authors:

D Naples, R Ayad, G Bonvincini, M Katz-Hyman, J Martoff, J Miyamoto, V Paolone, V Savinov, I Shipsey
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TeV scale resonant leptogenesis from supersymmetry breaking

Journal of High Energy Physics (2004)

Authors:

Thomas Hambye, JD March-Russell, Stephen M. West
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Tests of silicon sensors for the CMS pixel detector

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment Elsevier 530:1-2 (2004) 71-76

Authors:

A Dorokhov, C Amsler, D Bortoletto, V Chiochia, L Cremaldi, S Cucciarelli, M Konecki, K Prokofiev, C Regenfus, T Rohe, D Sanders, S Son, T Speer, M Swartz
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Experimental observation of the tilting mode of an array of vortices in a dilute Bose-Einstein condensate.

Phys Rev Lett 93:8 (2004) 080406

Authors:

NL Smith, WH Heathcote, JM Krueger, CJ Foot

Abstract:

We have measured the precession frequency of a vortex lattice in a Bose-Einstein condensate of Rb87 atoms. The observed mode corresponds to a collective motion in which all the vortices in the array are tilted by a small angle with respect to the z axis (the symmetry axis of the trapping potential) and synchronously rotate about this axis. This motion corresponds to excitation of a Kelvin wave along the core of each vortex and we have verified that it has the handedness expected for such helical waves, i.e., precession in the opposite sense to the rotational flow around the vortices.
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Optimized evaporative cooling using a dimple potential: An efficient route to Bose-Einstein condensation

Journal of Physics B: Atomic, Molecular and Optical Physics 37:15 (2004) 3187-3195

Authors:

ZY Ma, CJ Foot, SL Cornish

Abstract:

The realization of Bose-Einstein condensation of 133Cs relies on an innovative evaporative cooling technique using a dimple potential. Correctly loading an atomic gas into such a potential produces a dense sample with a high phase space density, ideal for evaporative cooling. We have numerically simulated both the loading process and the subsequent evaporative cooling from a dimple potential in order to elucidate the optimization of this technique. Furthermore, we demonstrate that this technique would be effective in cooling 85Rb to quantum degeneracy and describe a simple scheme for its implementation.
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