Speaker
Mr
Marco Gorghetto
(SISSA)
Description
The axion solution to the strong CP problem also provides a natural
dark matter candidate. If the PQ symmetry has ever been restored after
inflation, topological defects of the axion field would have formed and
produced relic axions, whose abundance is in principle calculable. Using
numerical simulations I will present a detailed study of the evolution of
axion strings and the resulting spectrum of axion produced. The features found
are important for a correct estimate of the total DM abundance.
Work to appear in collaboration with Edward Hardy and Giovanni Villadoro
Primary author
Mr
Marco Gorghetto
(SISSA)
Co-authors
Edward Hardy
(Liverpool U.)
Giovanni Villadoro
(ICTP)
