18-24 June 2017
Palacio de Congresos
Europe/Madrid timezone
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Contribution Plenary

Palacio de Congresos - Auditorio Manuel de Falla

Axions in Cosmology: What we Need from the Lattice


  • Prof. Guy MOORE

Primary authors



First I will review the QCD theta problem and the Peccei-Quinn solution, with its new particle, the axion. I will review the possibility of the axion as dark matter. If PQ symmetry was restored at some point in the hot early Universe, it should be possible to make a definite prediction for the axion mass if it constitutes the Dark Matter. I will describe progress on one issue needed to make this prediction -- the dynamics of axionic string-wall networks and how they produce axions. Then I will discuss the sensitivity of the calculation to the high temperature QCD topological susceptibility. My emphasis is on what temperature range is important, and what level of precision is needed.

Preferred track (if multiple tracks have been selected)

Nonzero Temperature and Density