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Measuring Many-Body Distribution Functions in Fluids using Test-Particle Insertion

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 نشر من قبل Adam Edward Stones
 تاريخ النشر 2020
  مجال البحث فيزياء
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We derive a hierarchy of equations which allow a general $n$-body distribution function to be measured by test-particle insertion of between $1$ and $n$ particles, and successfully apply it to measure the pair and three-body distribution functions in a simple fluid. The insertion-based methods overcome the drawbacks of the conventional distance-histogram approach, offering enhanced structural resolution and a more straightforward normalisation. They will be especially useful in characterising the structure of inhomogeneous fluids and investigating closure approximations in liquid state theory.



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