Nonuniversal Effects in the Homogenous Bose Gas

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Physical Sciences and Mathematics | Physics


Thomas Kirkman, Astronomy and Physics; Eric Braaten


In 1924 Albert Einstein predicted the existence of a special type of matter now known as Bose-Einstein condensation. However, it was not until 1995 that simple BEC (Bose-Einstein Condensation) was observed in a low-density Bose gas. This recent experimental breakthrough has led to renewed theoretical interest in BEC. The focus of my research is to more accurately determine basic properties of the interacting Bose gases. In particular nonuniversal effect of the the energy density and condensate fraction will be explored. The validity of the theoretical predictions obtained is verified by comparison to numerical data from the paper Ground State of a Homogeneous Bose Gas: A Diffusion Monte Carlo Calculation by Giorgini, Boronat, and Casulleras.