25-29 June 2018
UTC timezone

QCD Topology to High Temperatures via Reweighting

28 Jun 2018, 15:30
Alfa (Barcelona)




Mr Peter Thomas Jahn (TU Darmstadt)


Lattice QCD is the only feasible way to study topological effects of QCD above $T_\mathrm c$. Especially at high temperatures, the topological susceptibility has important implications for the properties of axion dark matter. However, at high temperatures there arise difficulties in the lattice calculation, namely poor sampling of non-zero topological sectors. We discuss these problems and present a new technique to circumvent them, namely a combination of gradient flow and reweighting in terms of the topological charge. We also present first results of the topological susceptibility up to about $4~T_\mathrm c$ in the quenched approximation.

Primary author

Mr Peter Thomas Jahn (TU Darmstadt)


Dr Daniel Robaina (TU Darmstadt) Prof. Guy D. Moore (TU Darmstadt)

Presentation Materials

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