• Self-assembled fluids with order-parameter-dependent mobility: The large-N limit

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      https://www.ias.ac.in/article/fulltext/pram/067/02/0291-0297

    • Keywords

       

      Morphological instability; phase changes; nonequilibrium; irreversible thermodynamics

    • Abstract

       

      The effect of the order-parameter-dependent mobility, $$\Gamma (\overrightarrow \phi ) \propto \left( {1 - g\tfrac{{\overrightarrow \phi ^2 }}{N}} \right)^\alpha $$, on phase-ordering dynamics of self-assembled fluids is studied analytically within the large-N limit. The study is for quenching from an uncorrelated high temperature state into the Lifshitz line within the microemulsion phase. In the later stage of the ordering process, the structure factor exhibits multiscaling behavior with characteristic length scale $$(t/\ln t)^{{1 \mathord{\left/ {\vphantom {1 {2\left( {2\alpha + 3} \right)}}} \right. \kern-\nulldelimiterspace} {2\left( {2\alpha + 3} \right)}}} $$ The order-parameter-dependent mobility is found to slow down the rate of coarsening.

    • Author Affiliations

       

      N P Rapapa1 2 N B Maliehe2

      1. The Abdus Salam International Centre for Theoretical Physics, Strada Costiera 11, P.O. Box 586, Trieste, Italy
      2. Faculty of Science and Technology, Department of Physics and Electronics, P.O. Roma, National University of Lesotho, Lesotho, Southern Africa
    • Dates

       
  • Pramana – Journal of Physics | News

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