Cold Quark Matter Equation of State

Equation of State: Numerics

1. A file that contains our equation of state in a form that can be evaluated numerically and an interface that generates tabulated results for specific parameters: EoScalc. Use this file if you want to see the details of our quark matter EoS, if you want to change something in the EoS, or if you want an EoS for parameters for which we have not already provided a tabulated result (see below). If you are just interested in e.g. the astrophysics results, you do not have to download this file.


2. A file that contains tabulated number densities for some parameter values: tabulated.nb . You will have to download this file if you want to use any of the following two files.


3. A file that performs the (homogeneous phase) matching of our quark matter EoS to a hadronic matter EoS: HybridEoS.nb . Use this file if you want to generate a hybrid EoS and/or the Mass-Radius relation of the associated hybrid compact star. Also, this file lets you output a tabulated version of the EoS in nuclear physics units.


4. A file that generates our pure strange quark matter EoS: StrangeEoS.nb . Use this file if you are interested in strange star Mass-Radius relations and/or a tabulated version of the strange quark matter EoS in nuclear physics units.


5. For completeness, we also provide the C++ code that was used to numerically evaluate the integrals I5,I6,I7 in our calculation here.

Equation of State: Tabulated Results

1. Case I Matching: Lambda_Msbar=0.378 GeV, m_s=0.07 GeV, Lambdabar=4 mu, Delta=0, B^1/4=89 MeV (matching at mu_B=976 MeV)
2. Case I Matching: Lambda_Msbar=0.346 GeV, m_s=0.07 GeV, Lambdabar=4 mu, Delta=0, B^1/4=92 MeV (matching at mu_B=987 MeV)
3. Case I Matching: Lambda_Msbar=0.378 GeV, m_s=0.1 GeV, Lambdabar=4 mu, Delta=0.1 GeV, B^1/4=113 MeV (matching at mu_B=996 MeV)
4. Case I Matching: Lambda_Msbar=0.346 GeV, m_s=0.07 GeV, Lambdabar=4 mu, Delta=0.1 GeV, B^1/4=110 MeV (matching at mu_B=1040 MeV)
5. Case II Matching: Lambda_Msbar=0.346 GeV, m_s=0.07 GeV, Lambdabar=4 mu, Delta=0, B=-(110 MeV)^4 (matching at mu_B=1290 MeV)
6. Pure Strange Quark Matter: Lambda_Msbar=0.346 GeV, m_s=0.07 GeV, Lambdabar=4 mu, Delta=0, mu_min=825 MeV
7. Pure Strange Quark Matter: Lambda_Msbar=0.346 GeV, m_s=0.07 GeV, Lambdabar=4 mu, Delta=0.1 GeV, mu_min=840 MeV

For Comparison: Hadronic Matter Equations of State

1. Nuclear Matter, based on an article by A. Akmal, V.R. Pandharipande and D.G. Ravenhall, converted from an article by J.M. Lattimer and M. Prakash, (original).
2. Nuclear Matter+ Hyperons, converted from an article by H.-J. Schulze, A. Polls, A. Ramos and I. Vidaña (V18, UIX, NSC89) (original).
3. Nuclear Matter+Kaon Condensation, based on an article by N. K. Glendenning and J. Schaffner-Bielich, converted from an article by J.M. Lattimer and M. Prakash, (original).