Cococubed.com dP/dρ from the LS and an NSE EOS

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Contact: F.X.Timmes
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The electron-positron portion of the two equations of state are identical. Differences between the two EOS routines originate from the model used for nucleons (interacting nucleons in a liquid dropish model versus non-interacting Boltzmann nucleons), and the model used for the composition.

LS Baryonic dP/dρ:
 dP/dρ from baryons Ye=0.5 dP/dρ from baryons Ye=0.4 dP/dρ from baryons Ye=0.3 dP/dρ from baryons Ye=0.2

Appears the baryon derivative goes negative as the coulomb lattice terms kick in. This may imply an imaginary sound speed.

LS Total dP/dρ:
 Total dP/dρ Ye=0.5 Total dP/dρ Ye=0.4 Total dP/dρ Ye=0.3 Total dP/dρ Ye=0.2

NSE Baryonic dP/dρ:
 dP/dρ from baryons Ye=0.5 dP/dρ from baryons Ye=0.4 dP/dρ from baryons Ye=0.3 dP/dρ from baryons Ye=0.2

NSE Total dP/dρ:
 Total dP/dρ Ye=0.5 Total dP/dρ Ye=0.4 Total dP/dρ Ye=0.3 Total dP/dρ Ye=0.2

LS and NSE dP/dρ Compared:
 dP/dρ Ye=0.5 dP/dρ Ye=0.4 dP/dρ Ye=0.3 dP/dρ Ye=0.2

 dP/dρ differences Ye=0.5 dP/dρ differences Ye=0.4 dP/dρ differences Ye=0.3 dP/dρ differences Ye=0.2