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Numerical method toward fast and accurate calculation of dilute quantum gas using Uehling-Uhlenbeck model equation

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      Abstract

      The numerical method toward the fast and accurate calculation of the dilute quantum gas is studied by proposing the Uehing-Uhlenbeck (U-U) model equation. In particular, the direct simulation Monte Carlo (DSMC) method is used to solve the U-U model equation. The DSMC analysis of the U-U model equation surely enables us to obtain the accurate thermalization using a small number of sample particles and calculate the dilute quantum gas dynamics in practical time. Finally, the availability of the DSMC analysis of the U-U model equation toward the fast and accurate calculation of the dilute quantum gas is confirmed by calculating the viscosity coefficient of the Bose gas on the basis of Green-Kubo expression or shock layer of the dilute Bose gas around a circular cylinder

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      Journal
      2015-11-23
      2016-04-28
      1511.07764

      http://arxiv.org/licenses/nonexclusive-distrib/1.0/

      Custom metadata
      physics.comp-ph cond-mat.quant-gas

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