Primer on Axion Physics
arXiv:2308.08612 · doi:10.1002/andp.202300106
Abstract
I review the canonical axion potential, with an emphasis on the field theory underlying radial and angular modes of complex scalar fields. I present the explicit calculation of the instanton-induced breaking of the Goldstone field direction necessary to derive the canonical axion mass and decay constant relation. The primer is intended to serve an audience with elementary quantum field theory expertise.
arXiv comment15 pages, 1 figure; invited contribution to Annalen der Physik
References in corpus (5)
- Measurement of the permanent electric dipole moment of the neutron
- Theta Vacua, QCD Sum Rules, and the Neutron Electric Dipole Moment
- Up and down quark masses and corrections to Dashen's theorem from lattice QCD and quenched QED
- Instantons in Partially Broken Gauge Groups
- Supersizing axions with small size instantons