Re-examining the quadratic approximation in theory of a weakly interacting Bose gas with condensate: the role of nonlocal interaction potentials

19 Sep 2018 Bulakhov Mykyta Peletminskii Alexander Peletminskii Sergey Slyusarenko Yurii Sotnikov Andrii

We derive and analyze the coupled equations of quadratic approximation of the Bogoliubov model for a weakly interacting Bose gas. The first equation determines the condensate density as a variational parameter and ensures the minimum of the grand thermodynamic potential... (read more)

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Categories


  • STATISTICAL MECHANICS
  • QUANTUM GASES