  Since the release of the 2015 Long Range Plan in Nuclear Physics, major
events have occurred that reshaped our understanding of quantum chromodynamics
(QCD) and nuclear matter at large densities, in and out of equilibrium. The US
nuclear community has an opportunity to capitalize on advances in astrophysical
observations and nuclear experiments and engage in an interdisciplinary effort
in the theory of dense baryonic matter that connects low- and high-energy
nuclear physics, astrophysics, gravitational waves physics, and data science
