Conditions of Electric Equilibrium at Boundary Surfaces; - download pdf or read online

By Hall E.H.

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75: 3969. 3. Bradley, C. , Sackett, C. , and Hulet, R. , 1997, Bose-Einstein condensation of lithium: Observation of limited condensate number, Phys. Rev. Lett. 78: 985. 4. Fried, D. , Killian, T. , Moss, S. , and Greytak, T. , 1998, Bose-Einstein condensation of atomic hydrogen, Phys. Rev. Lett. 5. 6. 7. 8. 9. 10. 11. 12. 13. 81: 3811. Andrews, M. , Townsend, C. , Durfee, D. , Kurn, D. , 1997, Observation of interference between two Bose-Einstein condensates, Science 275: 637. Hall, D. , Matthews, M.

Individual images of the condensates reveal this vertical structure; see Fig. 8(1) Hz. More and more bands appear as the condensate is increasingly twisted. 47 D. S. Hall 4. SOLITONS Consider again Fig. 3(b). In this picture, we see two regions of condensate predominantly in state separated by a region of condensate predominantly in state This situation is analogous to a dark soliton, in which the "notch" in the density of is filled with the condensate. The relative phase between the two regions is since the differential twisting has resulted in a differential spin rotation.

A rich set of possibilities appears when the coupling drive is mostly on. One limit that can be explored is that of a weak coupling, in which a drive is tuned to be resonant with the overlap region between the two condensates. Atoms can then be locally transferred back and forth between the two states29, giving rise to behavior reminiscent of Josephson junctions in superconductors. Indeed, such a system constitutes a physical realization of some Josephson junction thought experiments considered by Leggett and Sols30.

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Conditions of Electric Equilibrium at Boundary Surfaces; Volta Effect by Hall E.H.

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