Public Release of the Calculation Engine

[mrpelicer (Mateus Reinke Pelicer)]

It is with great pleasure that we announce the public release of the MUSES Calculation Engine.

The Calculation Engine (CE) is a key component of the MUSES framework, which aims to unify diverse models of nuclear matter under a common cyberinfrastructure, and model matter across the QCD phase diagram.

The CE is a modular, open-source application designed to run a wide range of equation of state (EoS) models — from cold nuclear matter to high-temperature, high-density quark-gluon plasma. It is built to support both astrophysical and heavy-ion physics applications, and it provides a coherent environment for generating EoS tables, computing thermodynamic, transport, and neutron-star properties.

This release coincides with the paper Building Neutron Stars with the MUSES Calculation Engine, recently authored by the MUSES collaboration and submitted for publication. The manuscript shows the versatility of the framework by analyzing neutron star properties with different neutron star EoS modules, and with combined equations of state.

Currently, there are two classes of modules available in MUSES:

1. Modules that either generate or manipulate the EoS:

   • Crust-Density Functional Theory
   • Chiral Effective Field Theory
   • Chiral Mean Field
   • Ising-2D T’ Expansion Scheme
   • 4D Taylor-expanded lattice - BQS
   • Holographic
   • Lepton
   • Synthesis

2. and modules that calculate observable results, such as neutron star and out-of-equilibrium properties:

   • QLIMR
   • Flavor Equilibration

We invite the community to try out the Calculation Engine, browse the documentation, and connect with us via our community forum.

• Get started with Calculation Engine.
• Check out the neutron star paper Building Neutron Stars with the MUSES Calculation Engine.