Publication Date:
2013-11-08
Description:
Author(s): Ya-Hui Zhang and Dingping Li The excitation spectrum for the three-dimensional Bose gas in the Bose-Einstein condensation phase is calculated nonperturbatively with the modified Hartree-Fock-Bogoliubov theory, which is both conserving and gapless. From improved Φ -derivable theory, the diagrams needed to preserve the Ward-Takaha... [Phys. Rev. A 88, 053604] Published Thu Nov 07, 2013
Keywords:
Matter waves and collective properties of cold atoms and molecules
Print ISSN:
1050-2947
Electronic ISSN:
1094-1622
Topics:
Physics