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Supernovae Simulations and the Equation of State
thesis
posted on 2013-04-11, 00:00 authored by Matthew Aaron MeixnerIn this thesis I present an updated and improved equation of state (which we call the NDL EoS) for use in neutron-star structure and supernova simulations. This EoS is based upon a framework originally developed by Bowers & Wilson, but there are numerous changes.
Among them are:
- a reformulation in the context of density functional theory;
- the possibility of the formation of material with a net proton excess (Ye > 0.5);
- an improved treatment of the nuclear statistical equilibrium and the transition to heavy nuclei as the density approaches nuclear matter density;
- an improved treatment of the effects of pions in the regime above nuclear matter density;
- the effects of 3-body nuclear forces at high densities; and
- a first order or crossover transition to a QCD chiral symmetry restoration and deconfinement phase at densities above nuclear matter density.
I show comparisons of this EoS with other equations of state commonly used in supernova collapse and neutron star simulations. I also show the effect the NDL EoS has on the thermodynamic quantities and nuclear abundances in the collapse simulation of Mayle & Wilson.
History
Date Modified
2017-06-05Defense Date
2013-03-07Research Director(s)
Grant J. MathewsCommittee Members
Peter Garnavich Grant J. Mathews Chris Howk Xiaodong TangDegree
- Doctor of Philosophy
Degree Level
- Doctoral Dissertation
Language
- English
Alternate Identifier
etd-04112013-123855Publisher
University of Notre DameProgram Name
- Physics
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