Instanton bags, high density holographic QCD, and chiral symmetry restoration

S. Bolognesi
2014 Physical Review D  
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. The
more » ... n bag is a good candidate for this high-density state. We compute its parameters via moduli stabilization. Chiral symmetry restoration is exhibited by this state, and it is a direct consequence of its non-diluted features.
doi:10.1103/physrevd.90.105015 fatcat:nlwd63w23zh3vpavkpusvvn73i