Department of Physics and Astronomy: Publications and Other Research
Date of this Version
July 1998
Abstract
An analytic expression is presented for the elementary excitation spectrum of the Bose-Einstein condensate of a trapped boson system in the weakly interacting, low-density limit. Explicit analytic formulas for the elementary excitation spectrum are obtained for harmonic-oscillator traps. These formulas provide information about the behavior of the elementary excitation levels as a function of the number of atoms and their interaction strength for a given trap geometry. They also provide a low-density benchmark for results of fully numerical calculations.
Comments
Published by American Physical Society. Phys. Rev. A 56, 570 (1997). http://pra.aps.org. Copyright © 1997 American Physical Society. Permission to use.