Elasticity of Nuclear Pasta

The elastic properties of neutron star crusts are relevant for a variety of currently observable or near-future electromagnetic and gravitational wave phenomena. These phenomena may depend on the elastic properties of nuclear pasta found in the inner crust. We present large-scale classical molecular dynamics simulations where we deform nuclear pasta. We simulate idealized samples of nuclear pasta and describe their breaking mechanism. We also deform nuclear pasta that is arranged into many domains, similar to what is known for the ions in neutron star crusts. Our results show that nuclear pasta may be the strongest known material, perhaps with a shear modulus of 10$^{30}$ ergs/cm$^3$ and a breaking strain greater than 0.1.

Publication Date:
Sept 24 2018
Date Submitted:
Jul 01 2019
Physical Review Letters
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 Record created 2019-07-01, last modified 2019-07-02

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