### Jonathan Carroll

University of Adelaide, Australia
###
QMC as a model of dense matter: from finite nuclei to hybrid stars

The QCD phase diagram at {μ > 0,T ≥ 0} is largely unknown and
particularly inaccessible to even lattice QCD simulations. One method
for investigating the μ >> 0 region is effective field theory
using mean-field meson potentials.
The EMC effect indicates that the quark structure of the nucleon is
modified in an essential way in a nuclear medium, and the Quark-Meson
Coupling (QMC) model provides a simple yet very successful description
of meson-baryon interactions with feedback to the quark structure of
the baryons.
With QMC predictions for finite nuclei -- and, in particular, finite
hypernuclei -- proving accurate, our attention turns to the equation
of state of dense matter and the structure of 'hybrid stars'; neutron
stars with proportions of hyperonic- or quark-matter. Using such an
equation of state as an input to the Tolman-Oppenheimer-Volkoff
equation allows us to construct models of stars and compare predicted
mass and radius with pulsar observations.
I will discuss the origins and predictions of QMC ranging from finite
nuclei to hybrid stars and our recent progress in extending this model
beyond the mean-field approximation to Hartree--Fock.

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