Zobrazeno 1 - 10
of 284
pro vyhledávání: '"Cornell, E. A."'
Autor:
Straatsma, C. J. E., Colussi, V. E., Davis, M. J., Lobser, D. S., Holland, M. J., Anderson, D. Z., Lewandowski, H. J., Cornell, E. A.
Publikováno v:
Phys. Rev. A 94, 043640 (2016)
We study the monopole (breathing) mode of a finite temperature Bose-Einstein condensate in an isotropic harmonic trap recently developed by Lobser et al. [Nat.~Phys., \textbf{11}, 1009 (2015)]. We observe a nonexponential collapse of the amplitude of
Externí odkaz:
http://arxiv.org/abs/1608.07248
Well before the atomistic nature of matter was experimentally established, Ludwig Boltzmann's audacious effort to explain the macroscopic world of human experience in terms of the workings of an unseen microscopic world met with vigorous opposition.
Externí odkaz:
http://arxiv.org/abs/1509.00366
Publikováno v:
Phys. Rev. Lett. 108, 145305 (2012)
A powerful set of universal relations, centered on a quantity called the contact, connects the strength of short-range two-body correlations to the thermodynamics of a many-body system with delta-function interactions. We report on measurements of th
Externí odkaz:
http://arxiv.org/abs/1112.0362
We demonstrate a photon-counting technique for detecting Bragg excitation of an ultracold gas of atoms. By measuring the response of the light field to the atoms, we derive a signal independent of traditional time-of-flight atom-imaging techniques. W
Externí odkaz:
http://arxiv.org/abs/1012.1574
Publikováno v:
Phys. Rev. Lett. 105, 230408 (2010)
In complementary images of coordinate-space and momentum-space density in a trapped 2D Bose gas, we observe the emergence of pre-superfluid behavior. As phase-space density $\rho$ increases toward degenerate values, we observe a gradual divergence of
Externí odkaz:
http://arxiv.org/abs/1009.2475
We report on measurements of the excitation spectrum of a strongly interacting Bose-Einstein condensate (BEC). A magnetic-field Feshbach resonance is used to tune atom-atom interactions in the condensate and to reach a regime where quantum depletion
Externí odkaz:
http://arxiv.org/abs/0805.0295
Publikováno v:
Phys. Rev. A 75, 062903 (2007)
In this paper we demonstrate a technique of utilizing magnetically trapped neutral Rb-87 atoms to measure the magnitude and direction of stray electric fields emanating from surface contaminants. We apply an alternating external electric field that a
Externí odkaz:
http://arxiv.org/abs/0705.2027
We observe the proliferation of vortices in the Berezinskii-Kosterlitz-Thouless regime on a two-dimensional array of Josephson-coupled Bose-Einstein condensates. As long as the Josephson (tunneling) energy J exceeds the thermal energy T, the array is
Externí odkaz:
http://arxiv.org/abs/0704.0289
Publikováno v:
Phys. Rev. Lett. 98, 063201 (2007)
We report on the first measurement of a temperature dependence of the Casimir-Polder force. This measurement was obtained by positioning a nearly pure 87-Rb Bose-Einstein condensate a few microns from a dielectric substrate and exciting its dipole os
Externí odkaz:
http://arxiv.org/abs/physics/0608074
We report the observation of vortex pinning in rotating gaseous Bose-Einstein condensates (BEC). The vortices are pinned to columnar pinning sites created by a co-rotating optical lattice superimposed on the rotating BEC. We study the effects of two
Externí odkaz:
http://arxiv.org/abs/cond-mat/0607697