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

Place

Location: Palacio de Congresos
Address: PALACIO DE CONGRESOS Paseo del Violón s/n, 18006 Granada, SPAIN
Date: 22 Jun 09:00 - 10:45

Conveners

    • Laine, Mikko (Bern University)
  • Discussion session on axions and the chiral anomaly at finite temperature
    • Laine, Mikko (Bern University)

Timetable | Contribution List

Displaying 4 contributions out of 4
Type: Plenary Session: Plenary Session - V
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 mak ... More
Presented by Prof. Guy MOORE on 22/6/2017 at 7:00
Type: Plenary Session: Plenary Session - V
In our recent study of 2-flavor lattice QCD using chiral fermions, we find strong suppression of axial U(1) anomaly above the critical temperature of chiral phase transition. Our simulation data also indicate suppression of topological susceptibility compared to that predicted by the dilute instanton gas approximation (DIGA). In this talk, we present both of our theoretical and numerical evidence ... More
Presented by Dr. Hidenori FUKAYA on 22/6/2017 at 9:50
Type: Plenary Session: Plenary Session - V
We recently obtained an estimate of the axion mass based on the hypothesis that axions make up most of the dark matter in the universe. A key ingredient for this calculation was the temperature-dependence of the topological susceptibility of full QCD. In the talk I summarize the calculation of the susceptibility in a range of temperatures from well below the finite temperature cross-over to a ... More
Presented by Tamas G. KOVACS on 22/6/2017 at 10:10
Type: Plenary Session: Plenary Session - V
Lattice computations are the only first principle method capable of quantitatively assessing the topological properties of QCD at high temperature, however the numerical determination of the topological properties of QCD, especially in the high temperature phase, is a notoriously difficult problem. We will discuss the difficulties encountered in such a computation and some strategies that have bee ... More
Presented by Dr. Claudio BONATI on 22/6/2017 at 9:30
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