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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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          Author and article information

          Journal
          2015-11-23
          2016-04-28
          Article
          1511.07764
          483f9d87-b00c-468f-96b7-2c3e90072c45

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

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

          Quantum gases & Cold atoms,Mathematical & Computational physics
          Quantum gases & Cold atoms, Mathematical & Computational physics

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