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physics.plasm-ph2025
Grain Boundary Diffusion in Yukawa Crystals
Matthew E. Caplan, Nevin T. Smith, Dany Yaacoub +3
We present calculations of diffusion coefficients in grain boundaries in Yukawa crystals for astrophysics. Our methods follow from our recent work calculating diffusion coefficient…
physics.plasm-ph2025
No Evidence of Anomalous Diffusion in Yukawa Crystals
Matthew E. Caplan, Dany Yaacoub
Diffusion in Yukawa crystals is stochastic due to the thermally activated formation of vacancy-interstitial pairs, which have poor statistics in simulations. This makes it difficul…
physics.plasm-ph2024
Universal Diffusion in Coulomb Crystals
M. E. Caplan, D. Yaacoub
Diffusion coefficients for crystallized Coulomb plasmas are essential microphysics input for modeling white dwarf cores and neutron star crusts but are poorly understood. In this w…