The Shear Viscosity and Thermal Conductivity of Nuclear Pasta

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dc.creatorHorowitz, C. J.
dc.creatorBerry, D. K.
dc.date2008-07-16
dc.date2008-09-05
dc.date.accessioned2026-07-07T11:44:51Z
dc.date.available2026-07-07T11:44:51Z
dc.descriptionWe calculate the shear viscosity $η$ and thermal conductivity $κ$ of a nuclear pasta phase in neutron star crusts. This involves complex non-spherical shapes. We use semiclassical molecular dynamics simulations involving 40,000 to 100,000 nucleons. The viscosity $η$ can be simply expressed in terms of the height $Z^*$ and width $Δq$ of the peak in the static structure factor $S_p(q)$. We find that $η$ increases somewhat, compared to a lower density phase involving spherical nuclei, because $Z^*$ decreases from form factor and ion screening effects. However, we do not find a dramatic increase in $η$ from non-spherical shapes, as may occur in conventional complex fluids.
dc.description8 pages, 7 figures, minor changes, Phys. Rev. C in press
dc.identifierhttps://arxiv.org/abs/0807.2603
dc.identifierhttp://arxiv.org/abs/0807.2603
dc.identifierPhys.Rev.C78:035806,2008
dc.identifierdoi:10.1103/PhysRevC.78.035806
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201699
dc.subjectAstrophysics
dc.subjectNuclear Theory
dc.titleThe Shear Viscosity and Thermal Conductivity of Nuclear Pasta
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