{"version":"1.0","type":"link","title":"Sigma model - Newikis","description":"In physics, a sigma model is a field theory that describes the field as a point particle confined to move on a fixed manifold. This manifold can be taken to be any Riemannian manifold, although it is most commonly taken to be either a Lie group or a symmetric space. The model may or may not be…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400}