Speaker
Matti Jarvinen
(APCTP, Pohang)
Description
The presence of Chern-Simons terms in holographic QCD is required by the global flavor anomaly structure. These Chern-Simons terms may give rise to a spatial instability at nonzero density, known as the Nakamura-Ooguri-Park instability. I demonstrate that this instability is unavoidable in a large class of bottom-up models of QCD anchored to lattice data, and extends to surprisingly high temperatures and low baryon number densities in the quark-gluon plasma phase. The precise range of the instability is however sensitive to the strange quark mass, which is not properly included in these models so far.
