Spatial modulation and topological current in holographic QCD matter

Understand

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.