We review theoretical approaches to explore the phase diagram of nuclear and quark matter
at high baryon density. We first look over the basic properties of quantum chromodynamics …

The QCD vacuum shows the dynamical breaking of chiral symmetry. In the hot and/or dense
QCD medium, the chiral order parameter such as⟨ q¯ q⟩ is expected to change as a …

The quest for the elementary entities of matter has always been a central objective in
physics. Of no less interest is the emergence of the structure (or phases) of matter built from …

Chiral symmetry, first entering in nuclear physics in the 1970s for which Gerry Brown played
a seminal role, has led to a stunningly successful framework for describing strongly …

We construct an effective chiral Lagrangian for hadrons implemented by the conformal
invariance and discuss the properties of nuclear matter at high density. The model is …

The transition in quantum chromodynamics from hadronic matter to the quark-gluon plasma
at high temperatures and/or net-baryon densities is associated with the restoration of chiral …

When scale symmetry is implemented into hidden local symmetry in low-energy strong
interactions to arrive at a scale-invariant hidden local symmetric (HLS) theory, the scalar f 0 …

We summarize how future measurements of electromagnetic (EM) probes at the Relativistic
Heavy Ion Collider (RHIC), in connection with theoretical analysis, can advance our …

We clarify and extend further the idea we developed before that baryonic matter at high
density has an emergent “pseudoconformal symmetry.” It is argued that as baryonic density …

We study the structural change of the vector spectral function and integrated production
rates of dileptons in the presence of the chiral mixing induced exclusively at finite density …