Instanton Bags, High Density Holographic QCD and Chiral Symmetry Restoration

Understand

We describe the simplest example of an instanton bag in Euclidean space.

• It consists of a monopole wall and a Kaluza-Klein monopole wall, lifted to one higher dimension, trapping the instanton charge in the middle.
• This object has finite instanton density in a three-dimensional volume.
• Baryon physics in holographic QCD models gets translated into a multi-instanton problem in the bulk, and a state with a high density baryonic charge consists of a non-diluted multi-instanton solution.