Spatial modulation and topological current in holographic QCD matter

Abstract

We investigate an impact of the axial-vector interaction on spatial modulation of quark matter. A magnetic field coupled with baryon density leads to a topological axial current, so that the effect of the axial-vector interaction is crucially enhanced then. Using the Sakai-Sugimoto model we have found that, contrary to a naive expectation, the spatially modulated phase is less favored for a stronger magnetic field, which is realized by the presence of topological current.

arXiv comment5 pages, 3 figures

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• Holographic calculation of the QCD crossover temperature in a magnetic field
• Thermodynamic phases and mesonic fluctuations in a chiral nucleon-meson model
• Electric conductivity with the magnetic field and the chiral anomaly in a holographic QCD model
• A magnetic instability of the non-Abelian Sakai-Sugimoto model
• Anomaly inflow on QCD axial domain-walls and vortices
• Spontaneous magnetization under a pseudovector interaction between quarks in high density quark matter
• Baryonic matter and beyond
• Spin polarization in high density quark matter under a strong external magnetic field
• Strongly interacting matter in extreme magnetic fields
• Holographic QCD Matter: Chiral Soliton Lattices in Strong Magnetic Field
• Background field and time dependence effects in holographic models