As dense as it gets: New model for matter in neutron star collisions goetheuni PhysRevX
Quantum chromodynamics is the theory of the strong nuclear force and an important building block of the standard model of particle physics. However, solving QCD at intermediate temperatures and densities—a few times the typical density found in atomic nuclei—is a long-standing open problem; even the precise phase structure of QCD in this region is not known.
We bridge the gap in theoretical predictions at intermediate densities by using the gauge/gravity duality, which maps the strongly coupled dynamics of QCD to classical analysis in higher-dimensional gravity. The model combines predictions from the gauge/gravity duality with input from lattice field theory, QCD perturbation theory, and traditional nuclear theory methods.
Our predictions for the critical point can be tested in collider experiments. Our equation-of-state models can be used in neutron star merger simulations, which then can be checked against existing and future gravitational wave detections.
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