Axion
= Axion
{wiki}
The axion is the <pseudo-Goldstone boson> of spontaneously broken Peccei–Quinn symmetry. Its QCD-generated potential dynamically relaxes the physical theta angle toward zero.
= Axion
{wiki}
The axion is the <pseudo-Goldstone boson> of spontaneously broken Peccei–Quinn symmetry. Its QCD-generated potential dynamically relaxes the physical theta angle toward zero.