Results 151 to 160 of about 20,873 (170)

Ultracold plasmas and Rydberg gases

Physics World, 2003
THE ULTRACOLD world has fascinated and surprised scientists since 1911, when Heike Kamerlingh Onnes discovered superconductivity in mercury at 4.2 K. Now physicists routinely achieve temperatures millions of times colder.
Scott Bergeson, Thomas Killian
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Ultracold Gases in Microgravity

Quantum-Atom Optics Downunder, 2007
Microgravity is expected to be a decisive ingredient for the next leap for experiments testing the fundamental physics of gravity, relativity and theories beyond the standard model. A promising technique for such tests in the quantum domain are matter-wave sensors based on cold atoms or atom lasers, which use atoms as unperturbed microscopic test ...
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Correlations in ultracold atomic gases

2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference, 2007
Summary form only given. Phase transitions are among the most dramatic phenomena in nature. Minute variations in the conditions controlling a system trigger a fundamental change of its properties. In the critical regime near a second-order phase transition point the fluctuations of the order parameter are so dominant that they completely govern the ...
Michael Kohl, T. Donner, S. Ritter, T. Bourdel, A. Ottl, T. Esslinger   +5 more
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Optomechanics of ultracold atomic gases

Physica Scripta, 2010
We give a brief overview of the basic aspects of the optomechanical interaction between a light field and a mechanical mode of ultracold bosonic and fermionic atomic gases inside a Fabry?P?rot cavity, showing that these systems provide a 'bottom up' approach to cavity optomechanics.
Rina Kanamoto, Pierre Meystre
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Magnetism in ultracold quantum gases

Journal of Modern Optics, 2004
Abstract We study the static and dynamic magnetic properties of ultracold quantum gases, in particular the spinor physics of F = 1 and F = 2 Bose-Einstein condensates of 87Rb atoms. Our data lead to the conclusion, that the F = 2 ground state of 87Rb is polar, while we find the F = 1 ground state to be ferromagnetic.
H. Schmaljohann, M. Erhard, J. Kronjägert, M. Kottke, S. Van Staa, J. J. Arlt, K. Bongs, K. Sengstock   +7 more
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New frontiers with ultracold gases

AIP Conference Proceedings, 2005
This article summarizes recent work at MIT, which was presented at ICAP 2004. These examples demonstrate the broad range of topics, which are covered by research on quantum‐degenerate gases: boson and fermion mixtures, cold molecules, vortices, and interactions with surfaces.
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Interactions in Ultracold Gases

2003
I Tutorials.The Quest for BEC (P. van der Straten & H. Metcalf).Quantum Collisions (J. Weiner).Introduction to Bose-Einstein Condensation (K. Bongs & K. Sengstock).Cold Molecules (E. Tiemann).Tutorial on Experimental Physics of Ultracold Gases (A. Mosk).II Topical Reports.Two-Dimensional Gas of Cesium Atoms Confined by Evanescent Waves (M.
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Triatomic states in ultracold gases

Nuclear Physics A, 2007
We study the trajectory of Efimov states for a trapped three-boson system when the two-body scattering length a is changed. We show that these states follow the route “virtual-bound-continuum resonance” state when a is varied, respectively, from large positive to negative values. For a 0 , we include the triatomic continuum resonance effect
Yamashita, Marcelo Takeshi, Frederico, T., Tomio, Lauro   +2 more
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Strongly interacting ultracold quantum gases

Frontiers of Physics in China, 2009
This article reviews recent progresses in ultracold quantum gases, and it includes three subjects which are the Fermi gases across a Feshbach resonance, quantum gases in the optical lattices and the fast rotating quantum gases. In this article, we discuss many basic physics pictures and concepts in quantum gases, for examples, the resonant interaction,
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Interactions in Ultracold Rydberg Gases

2014
Abstract In this chapter, we present a review of Rydberg atom interactions. The review focusses on the importance of these interactions in ultracold Rydberg atom physics. We address how these interactions are calculated and how measurements are carried out to probe them.
Luis G. Marcassa, James P. Shaffer
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