New phases of QCD at finite density

Stella Schindler

In the coming years, the FAIR accelerator will come online at GSI, opening up a new window into the phase structure of QCD. Now is the time to develop a better understanding of what the CBM experiment may find, with particular attention to signals of new physics. Lattice simulations can provide us first-principles information about QCD at zero density, but at nonzero density a sign problem arises from non-Hermiticity of the Dirac operator, obstructing our progress. In this talk, we bring insights from the field of non-Hermitian physics to bear on high energy theory, helping us develop new analytical and numerical tools for QCD phase structure. We show how non-Hermiticity can give rise to exotic new physics called a “moat regime” in the vicinity of a critical point. We discuss experimental signatures for these phenomena at FAIR.

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The colloquium will be streamed but not recorded.
Zoom link: https://uni-frankfurt.zoom.us/j/2848286010?pwd=VmtCY1RCc1hpVStKd0RibFBpc1IzZz09
Meeting ID: 284 828 6010
Password: 068695