Phys. Rev. A 66, 063603 (2002) [12 pages]Superfluidity and mean-field energy loops: Hysteretic behavior in Bose-Einstein condensatesReceived 2 September 2002; published 16 December 2002 We present a theory of hysteretic phenomena in Bose gases, using superfluidity in one-dimensional rings and in optical lattices as primary examples. Through this study we are able to give a physical interpretation of swallow-tail loops recently found by many authors in the mean-field energy structure of trapped atomic gases. These loops are a generic sign of hysteresis, and in the present context are an indication of superfluidity. We have also calculated the rate of decay of metastable current-carrying states due to quantum fluctuations. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.66.063603
DOI:
10.1103/PhysRevA.66.063603
PACS:
03.75.Fi
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.