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Polar-Nematic Order at the Interface of Motility-Induced Phase Separation: The Importance of Looking Ahead

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 نشر من قبل Chiu Fan Lee
 تاريخ النشر 2021
  مجال البحث فيزياء
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 تأليف Chiu Fan Lee




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Motility-induced phase separation is a purely non-equilibrium phenomenon in which self-propelled particles aggregate without any attractive interactions. One surprising feature of MIPS is the emergence of polar-nematic order at the interfacial region, whose underlying physics remains poorly understood. Here, I will show analytically and numerically that the many-body physics leading to the interfacial ordering behavior can be captured by an effective speed model. In this model, each particles speed depends on the systems density a short distance ahead of its direction of motion.



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