Quasicrystals in QCD

Abstract

We study the ground state of the low energy dense QCD with the assumption of chiral condensates of quarks. Under an external magnetic field, mesons could form soliton lattices via the chiral anomaly. For such scenarios, we present a unified description of pions and $\eta$ meson with a $U(2)$ field in the framework of the chiral perturbation theory. Our result shows the ground state is a mixture of the magnetized domain walls formed by neutral pion ${\pi }^0$ and $\eta$ meson when they coexist. The winding number of the ground state would alter according to the strength of the magnetic field. When the magnetic field is strong or the chemical potential is large, the proportion of the mixture is determined by the decay constants and the contributions to the anomalous action of ${\pi }^0$ and $\eta$ meson. The resulting configuration is either a mixed soliton lattice or a quasicrystal which could be dubbed a ``chiral soliton quasicrystal''.

19 pages, 6 figures

References in corpus (14)

• Quantum Anomalies in Dense Matter
• Inhomogeneous chiral condensates
• Axial anomaly and magnetism of nuclear and quark matter
• Correspondence between Skyrmions in 2+1 and 3+1 Dimensions
• Anomalous electrodynamics of neutral pion matter in strong magnetic fields
• Non-Abelian Sine-Gordon Solitons
• Non-Abelian Sine-Gordon Solitons: Correspondence between $SU(N)$ Skyrmions and $\mathbb{C}{P}^{N-1}$ Lumps
• Relations among topological solitons
• Anomaly-Induced Inhomogeneous Phase in Quark Matter without the Sign Problem
• QCD phase structure under rotation
• Quantum nucleation of topological solitons
• Formation of Chiral Soliton Lattice
• Anomalous low-temperature thermodynamics of QCD in strong magnetic fields
• Competition of chiral soliton lattice and Abrikosov vortex lattice in QCD with isospin chemical potential