---
author:
- 'Xun Chen,'
- 'Danning Li,'
- 'Defu Hou,'
- and Mei Huang
title: Quarkyonic phase from quenched dynamical holographic QCD model
---

Introduction {#sec-int}
============

Quantum Chromodynamics (QCD) is widely accepted as the fundamental theory of the strong interaction with two most important properties in the vacuum, i.e., the spontaneous chiral symmetry breaking and color confinement. At sufficient high temperature or/and baryon chemical potential, it is believed that the system will undergo phase transitions, involving the restoration of chiral symmetry and the release of color degrees of freedom. The interplay of chiral symmetry breaking and color confinement as well as the relation between chiral and deconfinement phase transitions at finite temperature and density reveal the fundamental property of quark dynamics and gluon dynamics, thus it attracts continuous interests [@Polyakov:1978vu; @'tHooft:1977hy; @Casher:1979vw; @Banks:1979yr; @Hatta:2003ga; @Mocsy:2003qw; @Braun:2007bx]. In the limit of large number of colors $N_c$, the quarkyonic phase was expected [@McLerran:2007qj; @Hidaka:2008yy; @McLerran:2008ua] in certain baryon number density region, where the chiral symmetry is restored but color degrees of freedom are still confined.

It requires more efforts to understand the full properties of QCD, since chiral symmetry breaking and color confinement have a non-perturbative origin, when the traditional 