Dense Matter from Nuclear Theory, Experiments, and Observations

The nuclear equation of state plays a central role for the physics of nuclei and dense matter in neutron stars. In this colloquium, we discuss constraints on the equation of state from nuclear theory, experiments, and observations, focusing on neutron-rich conditions. On the theory side, we present chiral effective field theory calculations for arbitrary proton fraction and temperature aided by machine learning techniques, and their implications for the phase diagram of neutron-rich matter. For experimental constraints, we explore the impact of heavy-ion collisions for the equation of state and the properties of neutron stars. Neutron skins also provide constraints and are narrowly predicted from chiral effective field theory. Moreover, we discuss implications of neutron star observations from LIGO/Virgo and NICER for the equation of state and how these are homing in on the physics of supranuclear matter.

FAIR-GSI PhD Award 2025

Presentation of award to Guy Leckenby (University of British Columbia, Canada) 
by Thomas Nilsson (FAIR & GSI) and Daniel Sälzer (Pfeiffer Vacuum GmbH)

Talk by award recipient:

Guy Leckenby (University of British Columbia, Canada)

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