August 28, 2016 to September 4, 2016
Europe/Athens timezone

Axion cosmology from lattice QCD

Aug 29, 2016, 7:30 PM
30m
Erato (Makedonia Palace)

Erato

Makedonia Palace

Section G: Strongly Coupled Theories Section G

Speaker

Sandor Katz (Eotvos University)

Description

The strong CP problem of QCD can be solved via the Peccei-Quinn mechanism. The resulting pseudo-Goldstone bosons, the axions are natural candidates for dark matter. In order to quantitatively understand axion dark matter production two important QCD inputs are required: the equation of state and the topological susceptibility at high temperatures. We determine these quantities and use them to determine the axion mass in different axion production scenarios.

Summary

We determine the equation of state and the topological susceptibility
at high temperatures using lattice QCD and apply them to determine the axion mass in different axion dark matter scenarios.

Primary author

Sandor Katz (Eotvos University)

Co-authors

Andreas Ringwald (Deutsches Elektronen-Synchrotron DESY) Ferenc Pittler (PTE) Szabolcs Borsanyi (University of Wuppertal) Tamas G. Kovacs (Institute for Nuclear Physics, Debrecen) Zoltan Fodor (BUW)

Presentation materials