We explore the QCD phase diagram by constructing a holographic model using Einstein-Maxwell-Scalar system. The chiral transition is investigated adding probe scalar and confinement studied string into By interpreting black hole in bulk spacetime as quarkyonic dual theory introducing bypass mechanism for deconfinement transition, we give an explanation why symmetry breaking lines coincide with e...

We compute the phase diagram in the N → ∞ limit for lattice RPN−1, CP and QP σ-models with the quartic action, and more generally for mixed isovector/isotensor models. We show that the N = ∞ limit exhibits phase transitions that are forbidden for any finite N . We clarify the origin of these pathologies by examining the exact solution of the one-dimensional model: we find that there are complex...