"Axions and Topology"

Presented by Simon Mages, Forschungszentrum Juelich

Wednesday, May 11, 2016, 2:00 pm — Small Seminar Room, Bldg. 510

This talk will be centered around the calculation of the high temperature topological susceptibility in QCD. It will provide some background on our motivation from cosmology and particle physics, which is the dependence of axion physics on non-perturbative QCD. I will show our recent results on the quenched high temperature topological susceptibility and discuss difficulties with this conventional approach, which render dynamical studies unfeasible. I will also present our new approach based on formulating QCD on a non-orientable manifold, which is a promising candidate to solve issues related to topological freezing and the divergence of autocorrelations when approaching the continuum limit.

Hosted by: Tomomi Ishikawa

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